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Word A Word B Word C Word D Occurrence Frequency Band MI MI Band Prominent
cause_n good_a great_a think_v 4,338 5 3.9369 3 true
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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
A43987 Elements of philosophy the first section, concerning body / written in Latine by Thomas Hobbes of Malmesbury ; and now translated into English ; to which are added Six lessons to the professors of mathematicks of the Institution of Sr. Henry Savile, in the University of Oxford.; De corpore. English Hobbes, Thomas, 1588-1679. 1656 (1656) Wing H2232; ESTC R22309 317,285 430

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near_o enough_o to_o any_o body_n we_o perceive_v the_o motion_n and_o go_v of_o the_o same_o we_o distinguish_v it_o thereby_o from_o a_o tree_n a_o column_n and_o other_o fix_a body_n and_o so_o that_o motion_n or_o go_v be_v the_o property_n thereof_o as_o be_v proper_a to_o live_a creature_n and_o a_o faculty_n by_o which_o they_o make_v we_o distinguish_v they_o from_o other_o body_n 5_o how_o the_o knowledge_n of_o any_o effect_n may_v be_v get_v from_o the_o knowledge_n of_o the_o generation_n thereof_o may_v easy_o be_v understand_v by_o the_o example_n of_o a_o circle_n for_o if_o there_o be_v set_v before_o we_o a_o plain_a figure_n have_v as_o near_o as_o may_v be_v the_o figure_n of_o a_o circle_n we_o can_v possible_o perceive_v by_o sense_n whether_o it_o be_v a_o true_a circle_n or_o no_o than_o which_o nevertheless_o nothing_o be_v more_o easy_a to_o be_v know_v to_o he_o that_o know_v first_o the_o generation_n of_o the_o propound_a figure_n for_o let_v it_o be_v 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therefore_o be_v nothing_o else_o but_o sense_n decay_v or_o weaken_v by_o the_o absence_n of_o the_o object_n but_o what_o may_v be_v the_o cause_n of_o this_o decay_n or_o weaken_n be_v the_o motion_n the_o weak_a because_o the_o object_n be_v take_v away_o if_o it_o be_v than_o phantasm_n will_v always_o and_o necessary_o be_v less_o clear_a in_o the_o imagination_n than_o they_o be_v in_o sense_n which_o be_v not_o true_a for_o in_o dream_n which_o be_v the_o imagination_n of_o those_o that_o sleep_n they_o be_v no_o less_o clear_a than_o in_o sense_n itself_o but_o the_o reason_n why_o in_o man_n wake_v the_o phantasm_n of_o thing_n past_a be_v more_o obscure_a than_o those_o of_o thing_n present_a be_v this_o that_o their_o organ_n be_v at_o the_o same_o time_n move_v by_o other_o present_a object_n those_o phantasm_n be_v the_o less_o predominant_a whereas_o in_o sleep_n the_o passage_n be_v shut_v up_o external_a action_n do_v not_o at_o all_o disturb_v or_o hinder_v internal_a 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phantasm_n of_o sense_n past_a three_o that_o sometime_o they_o proceed_v as_o in_o those_o that_o be_v drowsy_a from_o the_o interruption_n of_o their_o phantasm_n by_o little_a and_o little_o break_v and_o alter_v through_o sleepiness_n and_o sometime_o also_o they_o begin_v in_o the_o midst_n of_o sleep_n four_o that_o they_o be_v clear_a than_o the_o imagination_n of_o wake_a man_n except_o such_o as_o be_v make_v by_o sense_n itself_o to_o which_o they_o be_v equal_a in_o clearness_n five_o that_o when_o we_o dream_v we_o admire_v neither_o the_o place_n nor_o the_o look_n of_o the_o thing_n that_o appear_v to_o we_o now_o from_o what_o have_v be_v say_v it_o be_v not_o hard_a to_o show_v what_o may_v be_v the_o cause_n of_o these_o phaenomena_n for_o as_o for_o the_o first_o see_v all_o order_n and_o coherence_n proceed_v from_o frequent_a
produce_v and_o power_n in_o respect_n of_o the_o same_o effect_n to_o be_v produce_v hereafter_o so_o that_o cause_o respect_v the_o past_a power_n the_o future_a time_n also_o the_o power_n of_o the_o agent_n be_v that_o which_o be_v common_o call_v active_a power_n in_o like_a manner_n whensoever_o any_o patient_n have_v all_o those_o accident_n which_o it_o be_v requisite_a it_o shall_v have_v for_o the_o production_n of_o some_o effect_n in_o it_o we_o say_v it_o be_v in_o the_o power_n of_o that_o patient_n to_o produce_v that_o effect_n if_o it_o be_v apply_v to_o a_o fit_a agent_n but_o those_o accident_n as_o be_v define_v in_o the_o precedent_a chapter_n constitute_v the_o material_a cause_n and_o therefore_o the_o power_n of_o the_o patient_n common_o call_v passive_a power_n and_o material_a cause_n be_v the_o same_o thing_n but_o with_o this_o different_a consideration_n that_o in_o cause_n the_o past_a time_n and_o in_o power_n the_o future_a be_v respect_v wherefore_o the_o power_n of_o the_o agent_n and_o patient_n together_o which_o may_v be_v call_v entire_a or_o plenary_a power_n be_v the_o same_o thing_n with_o entire_a cause_n for_o they_o both_o consist_v in_o the_o sum_n or_o aggregate_v of_o all_o the_o accident_n as_o well_o in_o the_o agent_n as_o in_o the_o patient_n which_o be_v requisite_a for_o the_o production_n of_o the_o effect_n last_o as_o the_o accident_n produce_v be_v in_o respect_n of_o the_o cause_n call_v a_o effect_n so_o in_o respect_n of_o the_o power_n it_o be_v call_v a_o act._n 2_o as_o therefore_o the_o effect_n be_v produce_v in_o the_o same_o instant_n in_o which_o the_o cause_n be_v entire_a so_o also_o every_o act_n that_o may_v be_v produce_v be_v produce_v in_o the_o same_o instant_n in_o which_o the_o power_n be_v plenary_a and_o as_o there_o can_v be_v no_o effect_n but_o from_o a_o sufficient_a and_o necessary_a cause_n so_o also_o no_o act_n can_v be_v produce_v but_o by_o sufficient_a power_n or_o that_o power_n by_o which_o it_o can_v not_o but_o be_v produce_v 3_o and_o as_o it_o be_v manifest_a as_o i_o have_v show_v that_o the_o efficient_a and_o material_a cause_n be_v several_o and_o by_o themselves_o part_v only_o of_o a_o entire_a cause_n and_o can_v produce_v any_o effect_n but_o by_o be_v join_v together_o so_o also_o power_n active_a and_o passive_a be_v part_n only_o of_o plenary_a and_o entire_a power_n nor_o except_o they_o be_v join_v can_v any_o act_n proceed_v from_o they_o and_o therefore_o these_o power_n as_o i_o say_v in_o the_o first_o article_n be_v but_o conditional_a namely_o the_o agent_n have_v power_n if_o it_o be_v apply_v to_o a_o patient_n and_o the_o patient_n have_v power_n if_o it_o be_v apply_v to_o a_o agent_n otherwise_o neither_o of_o they_o have_v power_n nor_o can_v the_o accident_n which_o be_v in_o they_o several_o be_v proper_o call_v power_n nor_o any_o action_n be_v say_v to_o be_v possible_a for_o the_o power_n of_o the_o agent_n alone_o or_o of_o the_o patient_n alone_o 4_o for_o that_o be_v a_o impossible_a act_n for_o the_o production_n of_o which_o there_o be_v no_o power_n plenary_a for_o see_v plenary_a power_n be_v that_o in_o which_o all_o thing_n concur_v which_o be_v requisite_a for_o the_o production_n of_o a_o act_n if_o the_o power_n shall_v never_o be_v plenary_a there_o will_v always_o be_v want_v some_o of_o those_o thing_n without_o which_o the_o act_n can_v be_v produce_v wherefore_o that_o act_n shall_v never_o be_v produce_v that_o be_v that_o act_n be_v impossible_a and_o every_o act_n which_o be_v not_o impossible_a be_v possible_a every_o act_n therefore_o which_o be_v possible_a shall_v at_o some_o time_n be_v produce_v for_o if_o it_o shall_v never_o be_v produce_v than_o those_o thing_n shall_v never_o concur_v which_o be_v requisite_a for_o the_o production_n of_o it_o wherefore_o that_o act_n be_v impossible_a by_o the_o definition_n which_o be_v contrary_a to_o what_o be_v suppose_v 5_o a_o necessary_a act_n be_v that_o the_o production_n whereof_o it_o be_v impossible_a to_o hinder_v and_o therefore_o every_o act_n that_o shall_v be_v produce_v shall_v necessary_o be_v produce_v for_o that_o it_o shall_v not_o be_v produce_v be_v impossible_a because_o as_o be_v already_o demonstrate_v every_o possible_a act_n shall_v at_o some_o time_n be_v produce_v nay_o this_o proposition_n what_o shall_v be_v shall_v be_v be_v as_o necessary_a a_o proposition_n as_o this_o a_o man_n be_v a_o man._n but_o here_o perhaps_o some_o man_n may_v ask_v whether_o those_o future_a thing_n which_o be_v common_o call_v contingent_n be_v necessary_a i_o say_v therefore_o that_o general_o all_o contingent_n have_v their_o necessary_a cause_n as_o be_v show_v in_o the_o precede_a chapter_n but_o be_v call_v contingent_n in_o respect_n of_o other_o event_n upon_o which_o they_o do_v not_o depend_v as_o the_o rain_n which_o shall_v be_v to_o morrow_n shall_v be_v necessary_o that_o be_v from_o necessary_a cause_n but_o we_o think_v and_o say_v it_o happen_v by_o chance_n because_o we_o do_v not_o yet_o perceive_v the_o cause_n thereof_o though_o they_o exist_v now_o for_o man_n common_o call_v that_o casual_a or_o contingent_a whereof_o they_o do_v not_o perceive_v the_o necessary_a cause_n and_o in_o the_o same_o manner_n they_o use_v to_o speak_v of_o thing_n past_a when_o not_o know_v whether_o a_o thing_n be_v do_v or_o no_o they_o say_v it_o be_v possible_a it_o never_o be_v do_v wherefore_o all_o proposition_n concern_v future_a thing_n contingent_a or_o not_o contingent_a as_o this_o it_o will_v rain_v to_o morrow_n or_o this_o to_o morrow_n the_o sun_n will_v rise_v be_v either_o necessary_o true_a or_o necessary_o false_a but_o we_o call_v they_o contingent_a because_o we_o do_v not_o yet_o know_v whether_o they_o be_v true_a or_o false_a whereas_o their_o verity_n depend_v not_o upon_o our_o knowledge_n but_o upon_o the_o forego_n of_o their_o cause_n but_o there_o be_v some_o who_o though_o they_o confess_v this_o whole_a proposition_n to_o morrow_n it_o will_v either_o rain_n or_o not_o rain_n to_o be_v true_a yet_o they_o will_v not_o acknowledge_v the_o part_n of_o it_o as_o to_z morrow_n it_o will_v rain_v or_o to_o morrow_n it_o will_v not_o rain_v to_o be_v either_o of_o they_o true_a by_o itself_o because_o they_o say_v neither_o this_o nor_o that_o be_v true_a determinate_o but_o what_o be_v this_o determinate_o true_a but_o true_a upon_o our_o knowledge_n or_o evident_o true_a and_o therefore_o they_o say_v no_o more_o but_o that_o it_o be_v not_o yet_o know_v whether_o it_o be_v true_a or_o no_o but_o they_o say_v it_o more_o obscure_o and_o darken_v the_o evidence_n of_o the_o truth_n with_o the_o same_o word_n with_o which_o they_o endeavour_v to_o hide_v their_o own_o ignorance_n 6_o in_o the_o 9th_o article_n of_o the_o precedent_a chapter_n i_o have_v show_v that_o the_o efficient_a cause_n of_o all_o motion_n and_o mutation_n consist_v in_o the_o motion_n of_o the_o agent_n or_o agent_n and_o in_o the_o first_o article_n of_o this_o chapter_n that_o the_o power_n of_o the_o agent_n be_v the_o same_o thing_n with_o the_o efficient_a cause_n from_o whence_o it_o may_v be_v understand_v that_o all_o active_a power_n consist_v in_o motion_n also_o and_o that_o power_n be_v not_o a_o certain_a accident_n which_o differ_v from_o all_o act_n but_o be_v indeed_o a_o act_n namely_o motion_n which_o be_v therefore_o call_v power_n because_o another_o act_n shall_v be_v produce_v by_o it_o afterward_o for_o example_n if_o of_o three_o body_n the_o first_o put_v forward_o the_o second_o and_o this_o the_o three_o the_o motion_n of_o the_o second_o in_o respect_n of_o the_o first_o which_o produce_v it_o be_v the_o act_n of_o the_o second_o body_n but_o in_o respect_n of_o the_o three_o it_o be_v the_o active_a power_n of_o the_o same_o second_o body_n 7_o the_o writer_n of_o metaphysic_n reckon_v up_o two_o other_o cause_n beside_o the_o efficient_a and_o material_a namely_o the_o essence_n which_o some_o call_v the_o formal_a cause_n and_o the_o end_n or_o final_a cause_n both_o which_o be_v nevertheless_o efficient_a cause_n for_o when_o it_o be_v say_v the_o essence_n of_o a_o thing_n be_v the_o cause_n thereof_o as_o to_o be_v rational_a be_v the_o cause_n of_o man_n it_o be_v not_o intelligible_a for_o it_o be_v all_o one_o as_o if_o it_o be_v say_v to_o be_v a_o man_n be_v the_o cause_n of_o man_n which_o be_v not_o well_o say_v and_o yet_o the_o knowledge_n of_o the_o essence_n of_o any_o thing_n be_v the_o cause_n of_o the_o knowledge_n of_o the_o thing_n itself_o for_o if_o i_o first_o know_v that_o a_o thing_n be_v rational_a i_o know_v from_o thence_o that_o the_o same_o be_v man_n but_o this_o be_v no_o
when_o any_o new_a accident_n be_v generate_v a_o new_a name_n be_v common_o impose_v on_o the_o thing_n therefore_o he_o that_o assign_v this_o cause_n of_o individuity_n think_v the_o thing_n itself_o also_o be_v become_v another_o thing_n according_a to_o the_o first_o opinion_n he_o that_o sin_n and_o he_o that_o be_v punish_v shall_v not_o be_v the_o same_o man_n by_o reason_n of_o the_o perpetual_a flux_n and_o change_n of_o man_n body_n nor_o shall_v the_o city_n which_o make_v law_n in_o one_o age_n and_o abrogate_v they_o in_o another_o be_v the_o same_o city_n which_o be_v to_o confound_v all_o civil_a right_n according_a to_o the_o second_o opinion_n two_o body_n exist_v both_o at_o once_o will_v be_v one_o and_o the_o same_o numerical_a body_n for_o if_o for_o example_n that_o ship_n of_o theseus_n concern_v the_o difference_n whereof_o make_v by_o continual_a reparation_n in_o take_v out_o the_o old_a plank_n and_o put_v in_o new_a the_o sophister_n of_o athens_n be_v wont_a to_o dispute_v be_v after_o all_o the_o plank_n be_v change_v the_o same_o numerical_a ship_n it_o be_v at_o the_o beginning_n and_o if_o some_o man_n have_v keep_v the_o old_a plank_n as_o they_o be_v take_v out_o and_o by_o put_v they_o afterward_o together_o in_o the_o same_o order_n have_v again_o make_v a_o ship_n of_o they_o this_o without_o doubt_n have_v also_o be_v the_o same_o numerical_a ship_n with_o that_o which_o be_v at_o the_o beginning_n and_o so_o there_o will_v have_v be_v two_o ship_n numerical_o the_o same_o which_o be_v absurd_a but_o according_a to_o the_o three_o opinion_n nothing_o will_v be_v the_o same_o it_o be_v so_o that_o a_o man_n stand_v will_v not_o be_v the_o same_o he_o be_v sit_v nor_o the_o water_n which_o be_v in_o the_o vessel_n the_o same_o with_o that_o which_o be_v pour_v out_o of_o it_o wherefore_o the_o beginning_n of_o individuation_n be_v not_o always_o to_o be_v take_v either_o from_o matter_n alone_o or_o from_o form_n alone_o but_o we_o must_v consider_v by_o what_o name_n any_o thing_n be_v call_v when_o we_o inquire_v concern_v the_o identity_n of_o it_o for_o it_o be_v one_o thing_n to_o ask_v concern_v socrates_n whether_o he_o be_v the_o same_o man_n and_o another_o to_o ask_v whether_o he_o be_v the_o same_o body_n for_o his_o body_n when_o he_o be_v old_a can_v be_v the_o same_o it_o be_v when_o he_o be_v a_o infant_n by_o reason_n of_o the_o difference_n of_o magnitude_n for_o one_o body_n have_v always_o one_o and_o the_o same_o magnitude_n yet_o nevertheless_o he_o may_v be_v the_o same_o man._n and_o therefore_o whensoever_o the_o name_n by_o which_o it_o be_v ask_v whether_o a_o thing_n be_v the_o same_o it_o be_v be_v give_v it_o for_o the_o matter_n only_o then_o if_o the_o matter_n be_v the_o same_o the_o thing_n also_o be_v individual_o the_o same_o as_o the_o water_n which_o be_v in_o the_o sea_n be_v the_o same_o which_o be_v afterward_o in_o the_o cloud_n and_o any_o body_n be_v the_o same_o whether_o the_o part_n of_o it_o be_v put_v together_o or_o disperse_v or_o whether_o it_o be_v congeal_v or_o dissolve_v also_o if_o the_o name_n be_v give_v for_o such_o form_n as_o be_v the_o begin_n of_o motion_n then_o as_o long_o as_o that_o motion_n remain_v it_o will_v be_v the_o same_o individual_a thing_n as_o that_o man_n will_v be_v always_o the_o same_o who_o action_n and_o thought_n proceed_v all_o from_o the_o same_o begin_n of_o motion_n namely_o that_o which_o be_v in_o his_o generation_n and_o that_o will_v be_v the_o same_o river_n which_o flow_v from_o one_o and_o the_o same_o fountain_n whether_o the_o same_o water_n or_o other_o water_n or_o something_o else_o then_o water_n flow_v from_o thence_o and_o that_o the_o same_o city_n who_o act_n proceed_v continual_o from_o the_o same_o institution_n whether_o the_o man_n be_v the_o same_o or_o no._n last_o if_o the_o name_n be_v give_v for_o some_o accident_n than_o the_o identity_n of_o the_o thing_n will_v depend_v upon_o the_o matter_n for_o by_o the_o take_n away_o and_o supply_v of_o matter_n the_o accident_n that_o be_v be_v destroy_v and_o other_o new_a one_o be_v generate_v which_o can_v be_v the_o same_o numerical_o so_o that_o a_o ship_n which_o signify_v matter_n so_o figure_v will_v be_v the_o same_o as_o long_o as_o the_o matter_n remain_v the_o same_o but_o if_o no_o part_n of_o the_o matter_n be_v the_o same_o than_o it_o be_v numerical_o another_o ship_n and_o if_o part_n of_o the_o matter_n remain_v and_o part_n be_v change_v than_o the_o ship_n will_v be_v partly_o the_o same_o and_o partly_o not_o the_o same_o chap._n xii_o of_o quantity_n 1_o the_o definition_n of_o quantity_n 2_o the_o exposition_n of_o quantity_n what_o it_o be_v 3_o how_o line_n superficies_n and_o solid_a be_v expose_v 4_o how_o time_n be_v expose_v 5_o how_o number_n be_v expose_v 6_o how_o velocity_n be_v expose_v 7_o how_o weight_n be_v expose_v 8_o how_o the_o proportion_n of_o magnitude_n be_v expose_v 9_o how_o the_o proportion_n of_o time_n and_o velocity_n be_v expose_v 1_o what_o and_o how_o manifold_a dimension_n be_v have_v be_v say_v in_o the_o 8_o chapter_n namely_o that_o there_o be_v three_o dimension_n line_n or_o length_n superficies_n and_o solid_a every_o one_o of_o which_o if_o it_o be_v determine_v that_o be_v if_o the_o limit_n of_o it_o be_v make_v know_v be_v common_o call_v quantity_n for_o by_o quantity_n all_o man_n understand_v that_o which_o be_v signify_v by_o that_o word_n by_o which_o answer_n be_v make_v to_o the_o question_n how_o much_o be_v it_o whensoever_o therefore_o it_o be_v ask_v for_o example_n how_o long_o be_v the_o journey_n it_o be_v not_o answer_v indefinite_o length_n nor_o when_o it_o be_v ask_v how_o big_a be_v the_o field_n be_v it_o answer_v indefinite_o superficies_n nor_o if_o a_o man_n ask_v how_o great_a be_v the_o bulk_n indefinite_o solid_a but_o it_o be_v answer_v determinate_o the_o journey_n be_v a_o hundred_o mile_n the_o field_n be_v a_o hundred_o acre_n the_o bulk_n be_v a_o hundred_o cubical_a foot_n or_o at_o least_o in_o some_o such_o manner_n that_o the_o magnitude_n of_o the_o thing_n inquire_v after_o may_v by_o certain_a limit_n be_v comprehend_v in_o the_o mind_n quantity_n therefore_o can_v otherwise_o be_v define_v then_o to_o be_v a_o dimension_n determine_v or_o a_o dimension_n who_o limit_n be_v set_v out_o either_o by_o their_o place_n or_o by_o some_o comparison_n 2_o and_o quantity_n be_v determine_v two_o way_n one_o by_o the_o sense_n when_o some_o sensible_a object_n be_v set_v before_o it_o as_o when_o a_o line_n a_o superficies_n or_o solid_a of_o a_o foot_n or_o cubit_n mark_v out_o in_o some_o matter_n be_v object_v to_o the_o eye_n which_o way_n of_o determine_v be_v call_v exposition_n and_o the_o quantity_n so_o know_v be_v call_v expose_v quantity_n the_o other_o by_o memory_n that_o be_v by_o comparison_n with_o some_o expose_v quantity_n in_o the_o first_o manner_n when_o it_o be_v ask_v of_o what_o quantity_n a_o thing_n be_v it_o be_v answer_v of_o such_o quantity_n as_o you_o see_v expose_v in_o the_o second_o manner_n answer_n can_v be_v make_v but_o by_o comparison_n with_o some_o expose_v quantity_n for_o if_o it_o be_v ask_v how_o long_o be_v the_o way_n the_o answer_n be_v so_o many_o thousand_o pace_n that_o be_v by_o compare_v the_o way_n with_o a_o pace_n or_o some_o other_o measure_v determine_v and_o know_v by_o exposition_n or_o the_o quantity_n of_o it_o be_v to_o some_o other_o quantity_n know_v by_o exposition_n as_o the_o diameter_n of_o a_o square_n be_v to_o the_o side_n of_o the_o same_o or_o by_o some_o other_o the_o like_a mean_n but_o it_o be_v to_o be_v understand_v that_o the_o quantity_n expose_v must_v be_v some_o stand_n or_o permanent_a thing_n such_o as_o be_v mark_v out_o in_o consistent_a or_o durable_a matter_n or_o at_o lest_o something_o which_o be_v revocable_a to_o sense_n for_o otherwise_o no_o comparison_n can_v be_v make_v by_o it_o see_v therefore_o by_o what_o have_v be_v say_v in_o the_o next_o precede_v chapter_n comparison_n of_o one_o magnitude_n with_o another_o be_v the_o same_o thing_n with_o proportion_n it_o be_v manifest_a that_o quantity_n determine_v in_o the_o second_o manner_n be_v nothing_o else_o but_o the_o proportion_n of_o a_o dimension_n not_o expose_v to_o another_o which_o be_v expose_v that_o be_v the_o comparison_n of_o the_o equality_n or_o inequality_n thereof_o with_o a_o expose_v quantity_n 3_o line_n superficies_n and_o solid_n be_v expose_v first_o by_o motion_n in_o such_o manner_n as_o in_o the_o 8_o chapter_n i_o have_v say_v they_o be_v generate_v but_o so_o as_o that_o the_o mark_n of_o such_o
nothing_o but_o perturb_a light_n be_v comprehend_v wherefore_o the_o phantasm_n of_o a_o lucid_a body_n be_v light_n and_o of_o a_o colour_a body_n colour_n but_o the_o object_n of_o sight_n proper_o so_o call_v be_v neither_o light_n nor_o colour_n but_o the_o body_n itself_o which_o be_v lucid_a or_o enlighten_v or_o colour_v for_o light_n and_o colour_n be_v phantasm_n of_o the_o sentient_a can_v be_v accident_n of_o the_o object_n which_o be_v manifest_a enough_o from_o this_o that_o visible_a thing_n appear_v oftentimes_o in_o place_n in_o which_o we_o know_v assure_o they_o be_v not_o and_o that_o in_o different_a place_n they_o be_v of_o different_a colour_n and_o may_v at_o one_o and_o the_o same_o time_n appear_v in_o divers_a place_n motion_n rest_v magnitude_n and_o figure_n be_v common_a both_o to_o the_o sight_n and_o touch_n and_o the_o whole_a appearance_n together_o of_o figure_n and_o light_n or_o colour_n be_v by_o the_o greek_n common_o call_v 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d and_o by_o the_o latin_n species_n and_o imago_fw-la all_o which_o name_n signify_v no_o more_o but_o appearance_n the_o phantasm_n which_o be_v make_v by_o hear_v be_v sound_a by_o smell_n odour_n by_o taste_n savour_n and_o by_o touch_n hardness_n and_o softness_n heat_n and_o cold_a wetness_n oiliness_n and_o many_o more_o which_o be_v easy_a to_o be_v distinguish_v by_o sense_n then_o word_n smoothness_n roughness_n rarity_n and_o density_n refer_v to_o figure_n and_o be_v therefore_o common_a both_o to_o touch_v and_o sight_n and_o as_o for_o the_o object_n of_o hear_v smell_v taste_n and_o touch_v they_o be_v not_o sound_v odour_n savour_n hardness_n etc._n etc._n but_o the_o body_n themselves_o from_o which_o sound_n odour_n savour_n hardness_n etc._n etc._n proceed_v of_o the_o cause_n of_o which_o and_o of_o the_o manner_n how_o they_o be_v produce_v i_o shall_v speak_v hereafter_o but_o these_o phantasm_n though_o they_o be_v effect_n in_o the_o sentient_a as_o subject_a produce_v by_o object_n work_v upon_o the_o organ_n yet_o there_o be_v also_o other_o effect_n beside_o these_o produce_v by_o the_o same_o object_n in_o the_o same_o organ_n namely_o certain_a motion_n proceed_v from_o sense_n which_o be_v call_v animal_n motion_n for_o see_v in_o all_o sense_n of_o external_a thing_n there_o be_v mutual_a action_n and_o reaction_n that_o be_v two_o endeavour_n oppose_v one_o another_o it_o be_v manifest_a that_o the_o motion_n of_o both_o of_o they_o together_o will_v be_v continue_v every_o way_n especial_o to_o the_o confine_n of_o both_o the_o body_n and_o when_o this_o happen_v in_o the_o internal_a organ_n the_o endeavour_n outward_o will_v proceed_v in_o a_o solid_a angle_n which_o will_v be_v great_a and_o consequent_o the_o idea_n great_a than_o it_o will_v have_v be_v if_o the_o impression_n have_v be_v weak_a 11_o from_o hence_o the_o natural_a cause_n be_v manifest_a first_o why_o those_o thing_n seem_v to_o be_v great_a which_o caeteris_fw-la paribus_fw-la be_v see_v in_o a_o great_a angle_n second_o why_o in_o a_o serene_a cold_a night_n when_o the_o moon_n do_v not_o shine_v more_o of_o the_o fix_a star_n appear_v then_o at_o another_o time_n for_o their_o action_n be_v less_o hinder_v by_o the_o serenity_n of_o the_o air_n and_o not_o obscure_v by_o the_o great_a light_n of_o the_o moon_n which_o be_v then_o absent_a and_o the_o cold_a make_v the_o air_n more_o press_v help_v or_o strengthen_v the_o action_n of_o the_o star_n upon_o our_o eye_n in_o so_o much_o as_o star_n may_v then_o be_v see_v which_o be_v see_v at_o no_o other_o time_n and_o this_o may_v suffice_v to_o be_v say_v in_o general_a concern_v sense_n make_v by_o the_o reaction_n of_o the_o organ_n for_o as_o for_o the_o place_n of_o the_o image_n the_o deception_n of_o sight_n and_o other_o thing_n of_o which_o we_o have_v experience_n in_o ourselves_o by_o sense_n be_v they_o depend_v for_o the_o most_o part_n upon_o the_o fabric_n itself_o of_o the_o eye_n of_o man_n i_o shall_v speak_v of_o they_o then_o when_o i_o come_v to_o speak_v of_o man._n 12_o but_o there_o be_v another_o kind_n of_o sense_n of_o which_o i_o will_v say_v something_o in_o this_o place_n namely_o the_o sense_n of_o pleasure_n and_o pain_n proceed_v not_o from_o the_o reaction_n of_o the_o heart_n outward_o but_o from_o continual_a action_n from_o the_o outermost_a part_n of_o the_o organ_n towards_o the_o heart_n for_o the_o original_n of_o life_n be_v in_o the_o heart_n that_o motion_n in_o the_o sentient_n which_o be_v propagate_v to_o the_o heart_n must_v necessary_o make_v some_o alteration_n or_o diversion_n of_o vital_a motion_n namely_o by_o quicken_a or_o slacken_a help_a or_o hinder_v the_o same_o now_o when_o it_o help_v it_o be_v pleasure_n and_o when_o it_o hinder_v it_o be_v pain_n trouble_v grief_n etc._n etc._n and_o as_o phantasm_n seem_v to_o be_v without_o by_o reason_n of_o the_o endeavour_n outward_o so_o pleasure_n and_o pain_n by_o reason_n of_o the_o endeavour_n of_o the_o organ_n inward_o seem_v to_o be_v within_o namely_o there_o where_o the_o first_o cause_n of_o the_o pleasure_n or_o pain_n be_v as_o when_o the_o pain_n proceed_v from_o a_o wound_n we_o think_v the_o pain_n and_o the_o wound_n be_v both_o in_o the_o same_o place_n now_o vital_a motion_n be_v the_o motion_n of_o the_o blood_n perpetual_o circulate_v as_o have_v be_v show_v from_o many_o infallible_a sign_n and_o mark_n by_o doctor_n harvey_n the_o first_o observer_n of_o it_o in_o the_o vein_n and_o artery_n which_o motion_n when_o it_o be_v hinder_v by_o some_o other_o motion_n make_v by_o the_o action_n of_o sensible_a object_n may_v be_v restore_v again_o either_o by_o bend_v or_o set_v straight_o the_o part_n of_o the_o body_n which_o be_v do_v when_o the_o spirit_n be_v carry_v now_o into_o these_o now_o into_o other_o nerve_n till_o the_o pain_n as_o far_o as_o be_v possible_a be_v quite_o take_v away_o but_o if_o vital_a motion_n be_v help_v by_o motion_n make_v by_o sense_n than_o the_o part_n of_o the_o organ_n will_v be_v dispose_v to_o guide_v the_o spirit_n in_o such_o manner_n as_o conduce_v most_o to_o the_o preservation_n and_o augmentation_n of_o that_o motion_n by_o the_o help_n of_o the_o nerve_n and_o in_o animal_n motion_n this_o be_v the_o very_a first_o endeavour_n and_o find_v even_o in_o the_o embryo_n which_o while_o it_o be_v in_o the_o womb_n move_v its_o limb_n with_o voluntary_a motion_n for_o the_o avoid_n of_o whatsoever_o trouble_v it_o or_o for_o the_o pursue_v of_o what_o please_v it_o and_o this_o first_o endeavour_n when_o it_o tend_v towards_o such_o thing_n as_o be_v know_v by_o experience_n to_o be_v pleasant_a be_v call_v appetite_n that_o be_v a_o approach_v and_o when_o it_o shun_v what_o be_v troublesome_a aversion_n or_o fly_v from_o it_o and_o little_a infant_n at_o the_o beginning_n and_o as_o soon_o as_o they_o be_v bear_v have_v appetite_n to_o very_o few_o thing_n as_o also_o they_o avoid_v very_o few_o by_o reason_n of_o their_o want_n of_o experience_n and_o memory_n &_o therefore_o they_o have_v not_o so_o great_a a_o variety_n of_o animal_n motion_n as_o we_o see_v in_o those_o that_o be_v more_o grow_v for_o it_o be_v not_o possible_a without_o such_o knowledge_n as_o be_v derive_v from_o sense_n that_o be_v without_o experience_n and_o memory_n to_o know_v what_o will_v prove_v pleasant_a or_o hurtful_a only_o there_o be_v some_o place_n for_o conjecture_n from_o the_o look_n or_o aspect_n of_o thing_n and_o hence_o it_o be_v that_o though_o they_o do_v not_o know_v what_o may_v do_v they_o good_a or_o harm_n yet_o sometime_o they_o approach_v and_o sometime_o retire_v from_o the_o same_o thing_n as_o their_o doubt_n prompt_v they_o but_o afterward_o by_o accustom_v themselves_o by_o little_a and_o little_a they_o come_v to_o know_v ready_o what_o be_v to_o be_v pursue_v and_o what_o to_o be_v avoid_v and_o also_o to_o have_v a_o ready_a use_n of_o their_o nerve_n and_o other_o organ_n in_o the_o pursue_n and_o avoid_v of_o good_a and_o bad_a wherefore_o appetite_n and_o aversion_n be_v the_o first_o endeavour_n of_o animal_n motion_n consequent_a to_o this_o first_o endeavour_n be_v the_o impulsion_n into_o the_o nerve_n and_o retraction_n again_o of_o animal_n spirit_n of_o which_o it_o be_v necessary_a there_o be_v some_o receptacle_n on_o place_n near_o the_o original_n of_o the_o nerve_n and_o this_o motion_n or_o endeavour_n be_v follow_v by_o a_o swell_a and_o relaxation_n of_o the_o muscle_n and_o last_o these_o be_v follow_v by_o contraction_n and_o extension_n of_o the_o limb_n which_o be_v animal_n motion_n 13_o the_o consideration_n of_o appetite_n and_o aversion_n be_v divers_a for_o see_v live_a creature_n have_v sometime_o appetite_n and_o
of_o this_o evocation_n and_o swell_v and_o such_o as_o agree_v with_o the_o rest_n of_o the_o phaenomena_n of_o heat_n may_v be_v think_v to_o have_v give_v the_o cause_n of_o the_o heat_n of_o the_o sun_n it_o have_v be_v show_v in_o the_o 5_o article_n of_o the_o 21_o chapter_n that_o the_o fluid_fw-la medium_fw-la which_o we_o call_v the_o air_n be_v so_o move_v by_o the_o simple_a circular_a motion_n of_o the_o sun_n as_o that_o all_o its_o part_n even_o the_o least_o do_v perpetual_o change_v place_n with_o one_o another_o which_o change_n of_o place_n be_v that_o which_o there_o i_o call_v fermentation_n from_o this_o fermentation_n of_o the_o air_n i_o have_v in_o the_o 8_o article_n of_o the_o last_o chapter_n demonstrate_v that_o the_o water_n may_v be_v draw_v up_o into_o the_o cloud_n and_o i_o shall_v now_o show_v that_o the_o fluid_a part_n may_v in_o like_a manner_n by_o the_o same_o fermentation_n be_v draw_v out_o from_o the_o internal_a to_o the_o external_a part_n of_o our_o body_n for_o see_v that_o wheresoever_o the_o fluid_fw-la medium_fw-la be_v contiguous_a to_o the_o body_n of_o any_o live_a creature_n there_o the_o part_n of_o that_o medium_fw-la be_v by_o perpetual_a change_n of_o place_n separate_v from_o one_o another_o the_o contiguous_a part_n of_o the_o live_a creature_n must_v of_o necessity_n endeavour_v to_o enter_v into_o the_o space_n of_o the_o separate_a part_n for_o otherwise_o those_o part_n suppose_v there_o be_v no_o vacuum_n will_v have_v no_o place_n to_o go_v into_o and_o therefore_o that_o which_o be_v most_o fluid_a and_o separable_a in_o the_o part_n of_o the_o live_a creature_n which_o be_v contiguous_a to_o the_o medium_fw-la will_v go_v first_o out_o and_o into_o the_o place_n thereof_o will_v succeed_v such_o other_o part_n as_o can_v most_o easy_o transpire_v through_o the_o po●es_n of_o the_o skin_n and_o from_o hence_o it_o be_v necessary_a that_o the_o rest_n of_o the_o part_n which_o be_v not_o separate_v must_v all_o together_o be_v move_v outward_o for_o the_o keep_n of_o all_o place_n full_a but_o this_o motion_n outward_o of_o all_o part_n together_o must_v of_o necessity_n press_v those_o part_n of_o the_o ambient_fw-la aire_n which_o be_v ready_a to_o leave_v their_o place_n and_o therefore_o all_o the_o part_n of_o the_o body_n endeavour_v at_o once_o that_o way_n make_v the_o body_n swell_v wherefore_o a_o possible_a cause_n be_v give_v of_o heat_n from_o the_o sun_n which_o be_v to_o be_v do_v 4_o we_o have_v now_o see_v how_o light_n and_o heat_n be_v generate_v heat_v by_o the_o simple_a motion_n of_o the_o medium_fw-la make_v the_o part_n perpetual_o change_v place_n with_o one_o another_o and_o light_n by_o this_o that_o by_o the_o same_o simple_a motion_n action_n be_v propagate_v in_o a_o straight_a line_n but_o when_o a_o body_n have_v its_o part_n so_o move_v that_o it_o sensible_o both_o heat_n and_o shine_v at_o the_o same_o time_n than_o it_o be_v that_o we_o say_v fire_n be_v generate_v now_o by_o fire_n i_o do_v not_o understand_v a_o body_n distinct_a from_o matter_n combustible_a or_o glow_a as_o wood_n or_o iron_n but_o the_o matter_n itself_o not_o simple_o and_o always_o but_o then_o only_o when_o it_o shine_v and_o heat_v he_o therefore_o that_o render_v a_o cause_n possible_a and_o agreeable_a to_o the_o rest_n of_o the_o phaenomena_n namely_o whence_o and_o from_o what_o action_n both_o the_o shine_v and_o heat_n proceed_v may_v be_v think_v to_o have_v give_v a_o possible_a cause_n of_o the_o generation_n of_o fire_n let_v therefore_o abc_n in_o the_o first_o figure_n be_v a_o sphere_n or_o the_o portion_n of_o a_o sphere_n who_o centre_n be_v d_o and_o let_v it_o be_v transparent_a and_o homogeneous_a as_o crystal_n glass_n or_o water_n and_o object_v to_o the_o sun_n wherefore_o the_o foremost_a part_n abc_n will_v by_o the_o simple_a motion_n of_o the_o sun_n by_o which_o it_o thrust_v forward_o the_o medium_fw-la be_v wrought_v upon_o by_o the_o sunbeam_n in_o the_o straight_a line_n ea_fw-la fb_fw-la and_o gc_fw-la which_o straight_o line_n may_v in_o respect_n of_o the_o great_a distance_n of_o the_o sun_n be_v take_v for_o parallel_n and_o see_v the_o medium_fw-la within_o the_o sphere_n be_v thick_a than_o the_o medium_fw-la without_o it_o those_o beam_n will_v be_v refract_v towards_o their_o perpendicular_o let_v the_o straight_a line_n ea_z and_o gc_fw-la be_v produce_v till_o they_o cut_v the_o sphere_n in_o h_n and_o i_o and_o draw_v the_o perpendicular_n ad_fw-la and_o cd_o the_o refracted_a beam_n ea_z and_o gc_fw-la will_v of_o necessity_n fall_v the_o one_o between_o ah_o and_o ad_fw-la the_o other_o between_o ci_o and_o cd_o let_v those_o refracted_a beam_n be_v ak_a and_o cl._n and_o again_o let_v the_o line_n dkm_n &_o dln_n be_v draw_v perpendicular_a to_o the_o sphere_n and_o let_v ak_a and_o cl_n be_v produce_v till_o they_o meet_v with_o the_o straight_a line_n bd_o produce_v in_o o._n see_v therefore_o the_o medium_fw-la within_o the_o sphere_n be_v thick_a than_o that_o without_o it_o the_o refracted_a line_n ak_v will_v recede_v further_o from_o the_o perpendicular_a km_n then_o quoth_fw-mi will_v recede_v from_o the_o same_o wherefore_o quoth_fw-mi will_n fall_n between_o the_o refracted_a line_n and_o the_o perpendicular_a let_v therefore_o the_o refracted_a line_n be_v kp_n cut_a foe_n in_o p_o and_o for_o the_o same_o reason_n the_o straight_a line_n lp_n will_v be_v the_o refracted_a line_n of_o the_o straight_a line_n cl._n wherefore_o see_v the_o beam_n be_v nothing_o else_o but_o the_o way_n in_o which_o the_o motion_n be_v propagate_v the_o motion_n about_o p_o will_v be_v so_o much_o more_o vehement_a than_o the_o motion_n about_o abc_n by_o how_o much_o the_o base_a of_o the_o portion_n abc_n be_v great_a than_o the_o base_a of_o a_o like_a portion_n in_o the_o sphere_n who_o centre_n be_v p_o and_o who_o magnitude_n be_v equal_a to_o that_o of_o the_o little_a circle_n about_o p_o which_o comprehend_v all_o the_o beam_n that_o be_v propagate_v from_o abc_n and_o this_o sphere_n be_v much_o less_o than_o the_o sphere_n abc_n the_o part_n of_o the_o medium_fw-la that_o be_v of_o the_o air_n about_o p_o will_v change_v place_n with_o one_o another_o with_o much_o great_a celerity_n than_o those_o about_o abc_n if_o therefore_o any_o matter_n combustible_a that_o be_v to_o say_v such_o as_o may_v be_v easy_o dissipate_v be_v place_v in_o p_o the_o part_n of_o that_o matter_n if_o the_o proportion_n be_v great_a enough_o between_o ac_fw-la and_o a_o like_a portion_n of_o the_o little_a circle_n about_o p_o will_v be_v free_v from_o their_o mutual_a cohaesion_n and_o be_v separate_v will_v acquire_v simple_a motion_n but_o vehement_a simple_a motion_n generate_v in_o the_o beholder_n a_o phantasm_n of_o lucid_n and_o hot_a as_o i_o have_v before_o demonstrate_v of_o the_o simple_a motion_n of_o the_o sun_n and_o therefore_o the_o combustible_a matter_n which_o be_v place_v in_o p_o will_v be_v make_v lucid_n and_o hot_a that_o be_v to_o say_v will_v be_v fire_n wherefore_o i_o have_v render_v a_o possible_a cause_n of_o fire_n which_o be_v to_o be_v do_v 5_o from_o the_o manner_n by_o which_o the_o sun_n generate_v fire_n it_o be_v easy_a to_o explain_v the_o manner_n by_o which_o fire_n may_v be_v generate_v by_o the_o collision_n of_o two_o flint_n for_o by_o that_o collision_n some_o of_o those_o particle_n of_o which_o the_o stone_n be_v compact_v be_v violent_o separate_v and_o throw_v off_o and_o be_v withal_o swift_o turn_v round_o the_o eye_n be_v move_v by_o they_o as_o it_o be_v in_o the_o generation_n of_o light_n by_o the_o sun_n wherefore_o they_o shine_v and_o fall_v upon_o matter_n which_o be_v already_o half_o dissipate_v such_o as_o be_v tinder_n they_o thorough_o dissipate_v the_o part_n thereof_o and_o make_v they_o turn_v round_o from_o whence_o as_o i_o have_v new_o show_v light_n and_o 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a_o syringe_n into_o the_o space_n fgb_n in_o that_o injection_n the_o air_n but_o pure_a air_n go_v with_o the_o same_o force_n out_o of_o the_o vessel_n through_o the_o injected_a water_n but_o as_o for_o those_o small_a body_n which_o former_o i_o suppose_v to_o be_v intermingle_v with_o air_n &_o to_o be_v move_v with_o simple_a motion_n they_o can_v not_o together_o with_o the_o our_o air_n penetrate_v the_o water_n but_o remain_v behind_o be_v necessary_o thrust_v together_o into_o a_o narrow_a place_n namely_o into_o the_o space_n which_o be_v above_o the_o water_n fg._n the_o motion_n therefore_o of_o those_o small_a body_n will_v be_v less_o and_o less_o free_a by_o how_o much_o the_o quantity_n of_o the_o injected_a water_n be_v great_a and_o great_a so_o that_o by_o their_o motion_n fall_v upon_o one_o another_o the_o same_o small_a body_n will_v mutual_o compress_v each_o other_o and_o have_v a_o perpetual_a endeavour_n of_o regayn_v their_o liberty_n and_o of_o depress_v the_o water_n that_o hinder_v they_o wherefore_o as_o soon_o as_o the_o orifice_n above_o be_v open_v the_o water_n which_o be_v next_o it_o will_v have_v a_o endeavour_n to_o ascend_v and_o will_v therefore_o necessary_o go_v out_o but_o it_o can_v go_v out_o unless_o at_o the_o same_o time_n there_o enter_v in_o as_o much_o air_n and_o therefore_o both_o the_o water_n will_v go_v out_o and_o the_o air_n enter_v in_o till_o those_o small_a body_n which_o be_v leave_v within_o the_o vessel_n have_v recover_v their_o former_a liberty_n of_o motion_n that_o be_v to_o say_v till_o the_o vessel_n be_v again_o fill_v with_o air_n and_o no_o water_n be_v leave_v of_o sufficient_a height_n to_o stop_v the_o passage_n at_o b._n wherefore_o i_o have_v show_v a_o possible_a cause_n of_o this_o phaenomenon_n namely_o the_o same_o with_o that_o of_o thunder_n for_o as_o in_o the_o generation_n of_o thunder_n the_o small_a body_n enclose_v within_o the_o cloud_n by_o be_v too_o close_o pen_v together_o do_v by_o their_o motion_n break_v the_o cloud_n and_o restore_v themselves_o to_o their_o natural_a liberty_n so_o here_o also_o the_o small_a body_n enclose_v within_o the_o space_n which_o be_v above_o the_o straight_a line_n fg_v do_v by_o their_o own_o motion_n expel_v the_o water_n as_o soon_o as_o the_o passage_n be_v open_v above_o and_o if_o the_o passage_n be_v keep_v stop_v and_o these_o small_a body_n be_v more_o vehement_o compress_v by_o the_o perpetual_a force_n in_o of_o more_o water_n they_o will_v at_o last_o break_v the_o vessel_n itself_o with_o great_a noise_n 10_o if_o aire_n be_v blow_v into_o a_o hollow_a cylinder_n or_o into_o a_o bladder_n it_o will_v increase_v the_o weight_n of_o either_o of_o they_o a_o little_a as_o many_o have_v find_v by_o experience_n who_o with_o great_a accurateness_n have_v try_v the_o same_o and_o it_o be_v no_o wonder_n see_v as_o i_o have_v suppose_v there_o be_v intermingle_v with_o the_o common_a air_n a_o great_a number_n of_o small_a hard_a body_n which_o be_v heavy_a than_o the_o pure_a air_n for_o the_o aethereal_a substance_n be_v on_o all_o side_n equal_o agitate_a by_o the_o motion_n of_o the_o sun_n have_v a_o equal_a endeavour_n towards_o all_o the_o part_n of_o the_o universe_n and_o therefore_o it_o have_v no_o gravity_n at_o all_o 11_o we_o find_v also_o by_o experience_n that_o by_o the_o force_n of_o air_n enclose_v in_o a_o hollow_a canon_n a_o bullet_n of_o lead_n may_v with_o considerable_a violence_n be_v shoot_v out_o of_o a_o gun_n of_o late_a invention_n call_v the_o windgun_n in_o the_o end_n of_o this_o canon_n there_o be_v two_o hole_n with_o their_o valve_n on_o the_o inside_n to_o shut_v they_o close_o one_o of_o they_o serve_v for_o the_o admission_n of_o air_n and_o the_o other_o for_o the_o let_n of_o it_o out_o also_o to_o that_o end_n which_o serve_v for_o the_o receive_n in_o of_o air_n there_o be_v join_v another_o canon_n of_o the_o same_o metal_n and_o bigness_n in_o which_o there_o be_v fit_v a_o rammer_n which_o be_v perforate_v and_o have_v also_o a_o valve_n open_v towards_o the_o former_a canon_n by_o the_o help_n of_o this_o valve_n the_o rammer_n be_v easy_o draw_v back_o and_o let_v in_o air_n from_o without_o and_o be_v often_o draw_v back_o and_o return_v again_o with_o violent_a stroke_n it_o force_v some_o part_n of_o that_o air_n into_o the_o former_a canon_n so_o long_o till_o at_o last_o the_o resistance_n of_o the_o enclose_a air_n be_v great_a than_o the_o force_n of_o the_o stroke_n and_o by_o this_o mean_n man_n think_v there_o be_v now_o a_o great_a quantity_n of_o air_n in_o the_o canon_n then_o there_o be_v former_o though_o it_o be_v full_a before_o also_o the_o air_n thus_o force_v in_o how_o much_o soever_o it_o be_v be_v hinder_v from_o get_v out_o again_o by_o the_o foresay_a valve_n which_o the_o very_a endeavour_n of_o the_o air_n to_o get_v out_o do_v necessary_o shut_v last_o that_o valve_n be_v open_v which_o be_v make_v for_o the_o let_v out_o of_o the_o air_n it_o present_o break_v out_o with_o violence_n &_o drive_v the_o bullet_n before_o it_o with_o great_a force_n and_o velocity_n as_o for_o the_o cause_n of_o this_o i_o can_v easy_o attribute_v it_o as_o most_o man_n do_v to_o condensation_n and_o think_v that_o the_o air_n which_o have_v at_o the_o first_o but_o its_o ordinary_a degree_n of_o rarity_n be_v afterward_o by_o the_o force_n in_o of_o more_o air_n condense_v and_o last_o of_o all_o rarefy_v again_o by_o be_v let_v out_o and_o restore_v to_o its_o natural_a liberty_n but_o i_o can_v imagine_v how_o the_o same_o place_n can_v be_v always_o full_a and_o nevertheless_o contain_v sometime_o a_o great_a sometime_o a_o less_o quantity_n of_o matter_n that_o be_v to_o say_v that_o it_o can_v be_v full_a than_o full_a nor_o can_v i_o conceive_v how_o fullness_n can_v of_o itself_o be_v a_o efficient_a cause_n of_o motion_n for_o both_o ●hese_n be_v impossible_a wherefore_o we_o must_v seek_v out_o some_o other_o possible_a cause_n of_o this_o phaenomenon_n whilst_o therefore_o the_o valve_n with_o ch_n serve_v for_o the_o let_n in_o of_o air_n be_v open_v by_o the_o first_o stroke_n of_o the_o rammer_n the_o air_n within_o do_v with_o equal_a force_n resist_v the_o enter_n of_o the_o air_n from_o without_o so_o that_o the_o endeavour_n between_o the_o internal_a and_o external_a air_n be_v opposite_a that_o be_v there_o be_v two_o opposite_a motion_n while_o the_o one_o go_v in_o and_o the_o other_o come_v out_o but_o no_o augmentation_n at_o all_o of_o air_n within_o the_o canon_n for_o there_o be_v drive_v out_o by_o the_o stroke_n as_o much_o pure_a air_n which_o pass_v between_o the_o rammer_n and_o the_o side_n of_o the_o canon_n as_o there_o be_v force_v in_o of_o air_n impure_a by_o the_o same_o stroke_n and_o thus_o by_o many_o forcible_a stroke_n the_o quantity_n of_o small_a hard_a body_n will_v be_v increase_v within_o the_o canon_n and_o their_o motion_n also_o will_v grow_v strong_a and_o strong_a as_o long_a as_o the_o matter_n of_o the_o canon_n be_v able_a to_o endure_v their_o force_n by_o which_o if_o it_o be_v not_o break_v it_o will_v at_o least_o be_v urge_v every_o way_n by_o their_o endeavour_n to_o free_v themselves_o and_o as_o soon_o as_o the_o valve_n which_o serve_v to_o let_v they_o out_o be_v open_v they_o will_v fly_v out_o with_o violent_a motion_n and_o carry_v with_o they_o the_o bullet_n which_o be_v in_o their_o way_n wherefore_o i_o have_v give_v a_o possible_a cause_n of_o this_o phaenomenon_n 12_o water_n contrary_a to_o the_o custom_n of_o heavy_a body_n ascend_v in_o the_o weatherglass_n but_o it_o do_v it_o when_o the_o air_n be_v cold_a for_o when_o it_o be_v warm_v it_o descend_v again_o and_o this_o organ_n be_v call_v a_o thermometer_n or_o thermoscope_n because_o the_o degree_n of_o heat_n and_o cold_a be_v measure_v and_o mark_v by_o it_o it_o be_v make_v in_o this_o manner_n let_v a_o b_o c_o d_o in_o the_o 5_o figure_n be_v a_o vessel_n full_a of_o water_n and_o e_o f_o g_o a_o hollow_a cylinder_n of_o glass_n close_v at_o e_o and_o open_a at_o g._n let_v it_o be_v heat_v and_o set_v upright_o within_o the_o water_n to_o f_o and_o let_v the_o open_a end_n reach_v to_o g._n this_o be_v do_v as_o the_o air_n by_o little_a and_o little_o grow_v cold_a the_o water_n will_v ascend_v slow_o within_o the_o cylinder_n from_o f_o towards_o e_z till_o at_o last_o the_o external_a and_o internal_a air_n come_v to_o be_v both_o of_o the_o same_o temper_n it_o will_v neither_o ascend_v high_a nor_o descend_v low_o till_o the_o temper_n of_o the_o air_n be_v change_v suppose_v it_o therefore_o
the_o midst_n of_o the_o heaven_n 15_o the_o cause_n of_o whiteness_n 16_o the_o cause_n of_o blackness_n 1_o beside_o the_o star_n of_o which_o i_o have_v speak_v in_o the_o last_o chapt._n whatsoever_o other_o body_n there_o be_v in_o the_o world_n they_o may_v be_v all_o comprehend_v under_o the_o name_n of_o intersidereal_a body_n and_o these_o i_o have_v already_o suppose_v to_o be_v either_o the_o most_o fluid_a aether_n or_o such_o body_n who_o part_n have_v some_o degree_n of_o cohaesion_n now_o these_o differ_v from_o one_o another_o in_o their_o several_a consistency_n magnitude_n motion_n and_o figure_n in_o consistency_n i_o suppose_v some_o body_n to_o be_v hard_o other_o soft_a through_o all_o the_o several_a degree_n of_o tenacity_n in_o magnitude_n some_o to_o be_v great_a other_o less_o and_o many_o unspeakable_o little_a for_o we_o must_v remember_v that_o by_o the_o understanding_n quantity_n be_v divisible_a into_o divisibles_fw-fr perpetual_o and_o therefore_o if_o a_o man_n can_v do_v as_o much_o with_o his_o hand_n as_o he_o can_v with_o his_o understanding_n he_o will_v be_v able_a to_o take_v from_o any_o give_a magnitude_n a_o part_n which_o shall_v be_v less_o than_o any_o other_o magnitude_n give_v but_o the_o omnipotent_a creator_n of_o the_o world_n can_v actual_o from_o a_o part_n of_o any_o thing_n take_v another_o par●_n as_o far_o as_o we_o by_o our_o understanding_n can_v conceive_v the_o same_o to_o be_v divisible_a wherefore_o there_o be_v no_o impossible_a smallness_n of_o body_n and_o what_o hinder_v but_o that_o we_o may_v think_v this_o likely_a for_o we_o know_v there_o be_v some_o live_a creature_n so_o small_a that_o we_o can_v scarce_o see_v their_o whole_a body_n yet_o even_o these_o have_v their_o young_a one_o their_o little_a vein_n and_o other_o vessel_n and_o their_o eye_n so_o small_a as_o that_o no_o microscope_n can_v make_v they_o visible_a so_o that_o we_o can_v suppose_v any_o magnitude_n so_o little_a but_o that_o our_o very_a supposition_n be_v actual_o exceed_v by_o nature_n beside_o there_o be_v now_o such_o microscope_n common_o make_v that_o the_o thing_n we_o see_v with_o they_o appear_v a_o hundred_o thousand_o time_n big_a than_o they_o will_v do_v if_o we_o look_v upon_o they_o with_o our_o bare_a eye_n nor_o be_v there_o any_o doubt_n but_o that_o by_o augment_v the_o power_n of_o these_o microscope_n for_o it_o may_v be_v augment_v as_o long_o as_o neither_o matter_n nor_o the_o hand_n of_o workman_n be_v want_v every_o one_o of_o those_o hundred_o thousand_o part_n may_v yet_o appear_v a_o hundred_o thousand_o time_n geat_a than_o they_o do_v before_o neither_o be_v the_o smallness_n of_o some_o body_n to_o be_v more_o admire_v than_o the_o vast_a greatness_n of_o other_o for_o it_o belong_v to_o the_o same_o infinite_a power_n as_o well_o to_o augment_v infinite_o as_o infinite_o to_o diminish_v to_o make_v the_o great_a orb_n namely_o that_o who_o radius_fw-la reach_v from_o the_o earth_n to_o the_o sun_n but_o as_o a_o point_n in_o respect_n of_o the_o distance_n between_o the_o sun_n and_o the_o fix_a star_n and_o on_o the_o contrary_a to_o make_v a_o body_n so_o little_a as_o to_o be_v in_o the_o same_o proportion_n less_o than_o any_o other_o visible_a body_n proceed_v equal_o from_o one_o and_o the_o same_o author_n of_o nature_n but_o this_o of_o the_o immense_a distance_n of_o the_o fix_a star_n which_o for_o a_o long_a time_n be_v account_v a_o incredible_a thing_n be_v now_o believe_v by_o almost_o all_o the_o learned_a why_o then_o shall_v not_o that_o other_o of_o the_o smallness_n of_o some_o body_n become_v credible_a at_o some_o time_n or_o other_o for_o the_o majesty_n of_o god_n appear_v no_o less_o in_o small_a thing_n then_o in_o great_a and_o as_o it_o exceed_v humane_a sense_n in_o the_o immense_a greatness_n of_o the_o universe_n so_o also_o it_o do_v in_o the_o smallness_n of_o the_o part_n thereof_o nor_o be_v the_o first_o element_n of_o composition_n nor_o the_o first_o beginning_n of_o action_n nor_o the_o first_o moment_n of_o time_n more_o credible_a then_o that_o which_o be_v now_o believe_v of_o the_o vast_a distance_n of_o the_o fix_a star_n some_o thing_n be_v acknowledge_v by_o mortal_a man_n to_o be_v very_o great_a though_o finite_a as_o see_v they_o to_o be_v such_o they_o acknowledge_v also_o that_o some_o thing_n which_o they_o do_v not_o see_v may_v be_v of_o infinite_a magnitude_n but_o they_o be_v not_o present_o nor_o without_o great_a study_n persuade_v that_o there_o be_v any_o mean_a between_o infinite_a &_o the_o great_a of_o those_o thing_n which_o either_o they_o see_v or_o imagine_v nevertheless_o when_o after_o meditation_n &_o contemplation_n many_o thing_n which_o we_o wonder_v at_o before_o be_v now_o grow_v more_o familiar_a to_o we_o we_o then_o believe_v they_o and_o transfer_v our_o admiration_n from_o the_o creature_n to_o the_o creator_n but_o how_o little_a soever_o some_o body_n may_v be_v yet_o i_o will_v not_o suppose_v their_o quantity_n to_o be_v less_o then_o be_v requisite_a for_o the_o salve_v of_o the_o phaenomena_n and_o in_o like_a manner_n i_o shall_v suppose_v their_o motion_n namely_o their_o velocity_n and_o slowness_n and_o the_o variety_n of_o their_o figure_n to_o be_v only_o such_o as_o the_o explication_n of_o their_o natural_a cause_n require_v and_o last_o i_o suppose_v that_o the_o part_n of_o the_o pure_a aether_n as_o if_o it_o be_v the_o first_o matter_n have_v no_o motion_n at_o all_o but_o what_o they_o receive_v from_o body_n which_o float_v in_o they_o and_o be_v not_o themselves_o fluid_a 2_o have_v lay_v these_o ground_n let_v we_o come_v to_o speak_v of_o cause_n and_o in_o the_o first_o place_n let_v we_o inquire_v what_o may_v be_v the_o cause_n of_o the_o light_n of_o the_o sun_n see_v therefore_o the_o body_n of_o the_o sun_n do_v by_o its_o simple_a circular_a motion_n thrust_v away_o the_o ambient_fw-la aethereal_a substance_n sometime_o one_o way_n sometime_o another_o so_o that_o those_o part_n which_o be_v next_o the_o sun_n be_v move_v by_o it_o do_v propagate_v that_o motion_n to_o the_o next_o remote_a part_n and_o these_o to_o the_o next_o and_o so_o on_o continual_o it_o must_v needs_o be_v that_o notwithstanding_o any_o distance_n the_o foremost_a part_n of_o the_o eye_n will_v at_o last_o be_v press_v and_o by_o the_o pressure_n of_o that_o part_n the_o motion_n will_v be_v propagate_v to_o the_o innermost_a part_n of_o the_o organ_n of_o sight_n namely_o to_o the_o heart_n and_o from_o the_o reaction_n of_o the_o heart_n there_o will_v proceed_v a_o endeavour_n back_o by_o the_o same_o way_n end_v in_o the_o endeavour_n outward_o of_o the_o coat_n of_o the_o eye_n call_v the_o retina_fw-la but_o this_o endeavour_n outward_o as_o have_v be_v define_v in_o the_o 25_o chapter_n be_v the_o thing_n which_o be_v call_v light_n or_o the_o phantasm_n of_o a_o lucid_a body_n for_o it_o be_v by_o reason_n of_o this_o phantasm_n that_o a_o object_n be_v call_v lucid._n wherefore_o we_o have_v a_o possible_a cause_n of_o the_o light_n of_o the_o sun_n which_o i_o undertake_v to_o find_v 3_o the_o generation_n of_o the_o light_n of_o the_o sun_n be_v accompany_v with_o the_o generation_n of_o heat_n now_o every_o man_n know_v what_o heat_n be_v in_o himself_o by_o feel_v it_o when_o he_o grow_v hot_a but_o what_o it_o be_v in_o other_o thing_n he_o know_v only_o by_o ratiocination_n for_o it_o be_v one_o thing_n to_o grow_v hot_a and_o another_o thing_n to_o heat_n or_o make_v hot._n and_o therefore_o though_o we_o perceive_v that_o the_o fire_n or_o the_o sun_n heat_v yet_o we_o do_v not_o perceive_v that_o it_o be_v itself_o hot._n that_o other_o live_a creature_n while_o they_o make_v other_o thing_n hot_a be_v hot_a themselves_o we_o infer_v by_o reason_v from_o the_o like_a sense_n in_o ourselves_o but_o this_o be_v not_o a_o necessary_a inference_n for_o though_o it_o may_v true_o be_v say_v of_o live_a creature_n that_o they_o heat_v therefore_o they_o be_v themselves_o hot_a yet_o it_o can_v from_o hence_o be_v true_o infer_v that_o fire_n heat_v therefore_o it_o be_v itself_o hot_a no_o more_o than_o this_o fire_n cause_v pain_n therefore_o it_o be_v itself_o in_o pain_n wherefore_o that_o be_v only_o and_o proper_o call_v hot_a which_o when_o we_o feel_v we_o be_v necessary_o hot._n now_o when_o we_o grow_v hot_a we_o find_v that_o our_o spirit_n and_o blood_n and_o whatsoever_o be_v fluid_a within_o we_o be_v call_v out_o from_o the_o internal_a to_o the_o external_a part_n of_o our_o body_n more_o or_o less_o according_a to_o the_o degree_n of_o the_o heat_n and_o that_o our_o skin_n swell_v he_o therefore_o that_o can_v give_v a_o possible_a cause_n