of the Days comprehended in half a year And the obliquity of the Horizon is the cause that these parallels are cut by it unequally Otherwise if these parallels were not different from the Equator or although different if they were cut equally by the Horizon as it happens in a Right Sphere the Horizon which is a great Circle passing by the Poles of these parallels which are the same with those of the World both the Days and Nights would be equal so that where the Sphere is not inclin'd as in the Right and Parallel Spheres there is no inequality of Days nor consequently of Climate so call'd from its Inclination but only in the oblique Sphere 'T is defin'd a Region of Earth comprehended between two circles parallel to the Equator in which there is the difference of half an hour in the longest days of the year It encompasses the Terrestrial Globe from East to West as a Zone doth which differs from it only as the Zone is broader whence there are many Climats in the same Zone The Ancients having regard only to so much of the Earth as they believ'd inhabited made but seven Climats which they extended not beyond the places where the longest days are 16 hours and denominated from the most remarkable places by which they made them pass as the first Northern Climat was call'd Dia Meroes hy Meroe which they began at 12 deg 43 min. from the Aequinoctial where the longest day hath 12 hours three quarters and which at present is the end of our first Climat and beginning of the second This first Climat passes by Malaca a City of the East-Indies and begins at 4 deg 18 min. Its middle from which all Climats are reckon'd hath 8 deg 34 min. and its end 12 deg 43 min. The other six Climats of the Ancients pass'd by Siene Alexandria Rhodes Rome Pontus Euxinus and the River Boristhenes Ptolomy reckons twenty one as far as the Island Thule which lies in 63 deg of Northern Latitude Our modern Astronomers make twenty four from the Aequinoctial to the Polar Circles in each of which Climats the longest day of Summer encreases half an hour above twelve according as they approach nearer those Circles beyond which to the Poles of the World they place six more not distinguish'd by the variation of half an hour but of 30 days So that there is in all sixty Climats 30 Northern and as many Southern each comprehended by two Parallels which Climats are easily found by doubling the excess whereby the longest day surpasses twelve hours the Product being the Climat of the place As if you know the longest Summer day at Paris to be 16 hours double 4 the excess above 12 and you will have 8 which is the Climat of Paris and so of others And though there be the same reason of Seasons and other variations in the Southern and Northern Climats yet since experience shews us that those of the South are not inhabited beyond the 8th which is about the Cape of Good Hope at the farthest point of Africa beyond which no Inhabitants are as yet discover'd it may seem that the diversity of Climats is not alone sufficient for long or short life but there are other causes concurring thereunto The Second said That since a thing is preserv'd by that which produces it the Sun and Stars which concur to the generation of all living Creatures must also contribute to their preservation and continuance in life which being maintain'd by use of the same things variety and change though delightful yet being the most manifest cause of brevity of life that Climat which is most constant and least variable will be the properest for longaevity and so much the more if it suits with our nature such is the first Climat next the Aequinoctial where things being almost always alike bodies accustom'd thereunto receive less inconvenience thereby then under others whose inequalities and irregularities produce most diseases The natural purity of the Air promoted by the breath of a gentle East Wind there reigning continually and the want of vapours and humidities which commonly infect our Air conduce greatly to the health of the Inhabitants also when the dryness and coldness of their temper makes longer-liv'd as appears by Ravens and Elephants the most melancholy of all Animals which are common in these parts where they live above 300 years Moreover Homer testifies that Memnon King of Aethiopia liv'd 500 years which by the report of Xenophon was the common age of most men of the same Country where Francis Alvarez affirms in our time that he saw lusty men at 150 years of age and that in Aegypt which lies near it there are more old men then in any place of the World and that women are so fruitful there that they bring forth three or four children at a time rather through the goodness of the Climat then any nitrous vertue that is in the waters of Nilus Hence possibly most Doctors place the Terrestial Paradise under the Aequinoctial and the cause of our first Fathers longaevity who having been created under this Climat seem to have lost of its duration proportionably as they remov'd from the same Northwards whence all evil comes and towards the Zones wrongfully call'd Temperate since more subject to alteration then that call'd Torrid by the Ancients who thought it unhabitable by reason of extream heat although the continual Flowers and Fruits wherewith the always verdant Trees are laden testifie the contrary The Third said Since Heaven is immutable and always like to it self the Earth and Elements alone subject to change the length and shortness of Life seems not to depend on Heaven but on Earth and the several dispositions of our Bodies and the whole World being Man's Country there is no place in it but is equally proper for his habitation provided he be born there because the Air he breathes and the Food he eats from his Nativity altering his Body at length make his temper suitable to that of the place of his Education which therefore he loves above any other The Fourth said That Heaven remaining it self immutable is nevertheless the cause of motions and mutations here below its light producing different effects in the Earth according as it is receiv'd the most sensible whereof are heat dryness and other qualities which diversifie the Seasons and Zones of which the two temperate especially the Northern seems most habitable and proper for longaevity 'T is also the most populous and its Natives are not only the most healthy and lusty but also the most refin'd and civiliz'd of all others Now of the Climats of this Zone the eighth wherein Paris lyes seems to me the healthiest of all as well for pureness of Air as all other Causes The Fifth said That the goodness of Climats depends not so much upon Heaven as the situation of each place in reference to the Winds of which the Southern being the most unhealthy therefore Towns defended by
and dry bodies are more gross and earthy those of pure water more subtle and as to the final aqueons vapours serve to irrigate unctuous to impinguate the earth The Third said 'T is not credible that heat is the efficient cause of vapours since they abound more in Winter then Summer and in less hot Climats then in such where heat predominates which have none at all as Egypt and other places where it never rains If you say that there are no vapours there because the Suns heat dssipates as fast as it raises them you imply heat contrary to vapours since it dissolves them and suffers them not to gather into one body The Fourth said Copiousness of vapours in cold Seasons and Regions makes not against their production by heat since the heat which mounts them upwards is not that of the Suns rays but from within the earth which every one acknowledges so much hotter during Winter in its centre as its surface is colder where the matter of vapours coming to be repercuss'd by the coldness of the air is thereby condens'd and receives its form On the contrary in Summer the earth being cold within exhales nothing and if ought issue forth it is not compacted but dissipated by the heat of the outward air The Fifth said That the thorough inquisition of the cause of vapours raises no fewer clouds and obscurities in the wits of men then their true cause produces in the air For if we attribute them to the Sun whose heat penetrating the earth or outwardly calefying it attracts the thinner parts of the earth and water this is contradicted by experience which shews us more Rain Storms and violent Winds in the Winter when the Suns heat is weakest then in the Shmmer when his rays are more perpendicular and as such ought to penetrate deeper into the earth and from its centre or surface attract greater plenty of vapours the contrary whereof falls out It follows therefore that the Sun hath no such attractive faculty Nor is the coldness and dryness of the earth any way proper for the production of such humid substances as Vapours and Exhalations the latter whereof being more subtle and consequently more moveable as appears by Earth-quakes Winds and Tempests which are made with greater violence then Rain Showers or Dew cannot be engendred of earth much grosser then water which is held the material cause of vapour otherwise an exhalation being earthy should be more gross then a vapour extracted out of water which it is not It remains then that the cause of vapours is the internal heat of the earth which being encreas'd from without by the cold of the ambient air or exhaling all its pores open'd by the heat of the Sun produces the diversity of Meteors And this internal heat of the earth appears in Winter by the reaking of Springs and the warmth of Caves and subterraneous places yea the Sea it self said to supply the principle matter to these vapours is affirm'd hotter at the bottom whither therefore the Fishes retire and indeed it is so in its substance as appears by its salt bitterness and motion whence 't is call'd by the Latines Aestus And as in the bodies of Animals vapours issuing by the pores open'd by heat cause sweat and when those passages are stopt by the coldness of the outward air their subtler parts are resolv'd into flatuosities and the more gross and humid are carried up to the Brain by whose coldness being condens'd they fall down upon other parts and produce defluxions so in the world which like us consists of solid parts earth and stones of fluid the waters and of rapid which are the most subtle and tenuious parts of the Mass when these last happen to be associated with others more gross they carry them up on high with themselves where they meet with other natural causes of Cold and Heat which rarefies or condenses and redouble their impetuosity by the occurrence of some obstacle in their way these Spirits being incapable of confinement because 't is proper to them to wander freely through the World Elementary qualities are indeed found joyn'd with these vapours and exhalations but are no more the causes of them then of our animal vital or natural spirits which are likewise imbu'd with the same The Sixth said That the general cause of vapours is Heaven which by its motion light and influences heating and penetrating the Elements subtilises them and extracts their purest parts as appears by the Sea whose saltness proceeds from the Suns having drawn away the lighter and fresher parts and left the grosser and bitter in the surface cold and heat condense and rarefie other and by this Reciprocation the harmonious proportion of the four Elements is continu'd sometimes tempering the Earths excessive dryness by gentle Dews or fruitful Rains and sometimes correcting the too great humidity and impurity of the air by winds and igneous impressions some of which serve also to adorn the World and instruct Men. And as these vapours are for the common good of the Universe in which they maintain Generations and for preservation of the Elements who by this means purge their impurities so they all contribute to the matter of them Fire forms most igneous and luminous impressions Air rarefi'd supplies matter for winds as is seen in the Aeolipila and condens'd is turn'd into rain But especially water and earth the grossest Elements and consequently most subject to the impressions of outward agents continually emit fumes or steams out of their bosom which are always observ'd in the surface of the Terraqueous Globe even in the clearest days of the year and form the diversity of parallaxes These fumes are either dry or moist the dry arise out of the earth and are call'd Exhalations the moist are Vapours and issue from the water yet both are endu'd with an adventitious heat either from subterranean fires or the heat of Heaven or the mixture of fire A Vapour is less hot then an Exhalation because its aqueous humidity abates its heat whereas that of the latter is promoted by its dryness which yet must be a little season'd with humidity the sole aliment and mansion of heat which hath no operation upon bodies totally dry whence ashes remain incorruptible in the midst of flames and evaporate nothing But whatever be the cause of these vapours they are not only more tenuious under that form but also after the re-assumption of their own So Dew is a more potent dissolver and penetrates more then common water which some attribute to the Nitre wherewith the earth abounds Upon the Second Point it was said Valour is a Virtue so high above the pitch of others and so admir'd by all men that 't was it alone that deifi'd the Heroes of Antiquity For Nature having given Man a desire of Self-preservation the Virtue which makes him despise the apprehension of such dangers as may destroy him is undoubtedly the most eminent of all other moral
Mixts are compounded The Sun indeed is the Efficient Cause of all productions here below but being a celestial and incorruptible body cannot enter into the composition of any thing as a Material Cause Much less can our common Fire which devours every thing and continually destroyes its Subject But it must be that Elementary Fire which is every where potentially and actually in its own Sphere which is above that of the Air and below that of the Moon Moreover being the lightest or least heavy of all the Elements the Harmony of the Universe which consists chiefly in their situation requires that it be in the highest place towards which therefore all other Fires which are of the same Nature ascend in a point with the same violence that a stone descends towards its Centre those remaining here below being detain'd by some Matter whereof they have need by reason of the contraries environing them from which that Sublunary Fire being exempt hath nothing to do with Matter or nourishment and by reason of its great rarity and tenuity can neither burn nor heat any more then it can be perceiv'd by us The Second said That subtlety one of the principal conditions requisite to the conversion of Matter into Fire is so far from hindring that it encreases the violence and activity of Fire making it penetrate even the solidest bodies whence that pretended Fire not being mixt with extraneous things to allay its heat as that of Aqua Vitae is temper'd by its Phlegm or aqueous humidity but being all Fire in its own Sphere and natural place which heightens the Virtue and qualities of all Agents must there also heat shine burn and produce all its Actions which depend not upon density or rarity or such other accidents of Matter purely passive but upon its whole Form which constituting it what it is must also make it produce Effects sutable to its Nature Wherefore as Water condens'd into Ice or Crystal is no longer Water because it hath ceas'd to refrigerate and moisten so the Fire pretended to be above the Air invisible and insensible by reason of its rarity is not Fire but subtile Air. They who say its natural inclination to heat and burn is restrain'd by the Influences of the Heavens particularly of the cold Starrs as Saturn and the Moon speak with as little ground since the circular motion of the Heavens whereby this Fire is turn'd about should rather increase than diminish its heat And besides Fire being a necessary Agent its action can no more be hindred by such Influences than the descent of a stone downwards Whereunto add that the beams of all Stars have heat and were any cold yet those of Saturn are too remote and those of the Moon too weak in comparison of this Fire the extent whereof is about 90000. Leagues for the distance between the Earth and the Moon is almost as much namely 56. Semidiameters of the Earth from which substracting between 25. and 30. Leagues which they allot to the three Regions of the Air the rest must be occupy'd by the Fire which they make to extend from the Concave surface of the Moon to the convex surface of the Air which it would consume in less than a moment considering the great disproportion between them Moreover were there such a Fire it could not be own'd an Element because its levity would keep it from descending and entring into the Composition of mixts and were it not leight yet it would be hindred from descending by the extream coldness of the Middle Region of the Air accounted by some a barrier to the violence of that Chymerical Fire which ought rather to be reckon'd amongst their Entia Rationis than the Natural Elements whereunto Corporeity and Palpability are requisite For these Reasons I conceive with Pythagoras that the Sun is the true Elementary Fire plac'd for that purpose in the middle of the World whose Light and Heat enter into the Composition not onely of all living things but also of Stones and Metals all other Heat besides that of the Sun being destructive and consequently no-wise fit for Generation The Third said He confounds Heaven with Earth and destroyes the Nature of the Sun who takes it for an Element that is to say a thing alterable and corruptible by its contraries which it must have if it be an Element The Heat of his beams proves it not the Elementary Fire seeing commonly the nearer we are to Fire the more we feel the Heat of it but the Supream and Middle Regions of the Air are colder than ours Besides were our common fire deriv'd from the Sun it would not languish as it doth when the Sun shines upon it nor would the heat of dunghils and caves be greater in Winter than in Summer Wherefore I rather embrace the common Opinion which holds That the heaviest Element is in the lowest place and the leightest in the highest whose Action is hindred by the proportion requisite to the quantity of each Element The Fourth said That the qualities of Fire viz. Heat Dryness and Light concurring in the Sun in a supream degree argue it the Elementary Fire for Light being the Cause of Heat the Sun which is the prime Luminous Body must also be the prime Hot that is to say Fire For as the pretended one above the Air was never yet discover'd so 't is repugnant to the Order of the Universe for the leightest of Elements to be shut up in the Centre of the Earth where some place it We have but two wayes to know things Sense and Reason the latter of which is founded either upon Causes or Effects Now we know nothing of the Sun or any other Celestial Bodies otherwise then by its Effects and sensible qualities which being united in Spherical Burning-glasses as they are in the body of the Sun notifie to us by their Effects the Nature of their Cause The Fifth said That Fire being to the World what the Soul is to the Body as Life is in all the parts of the Body so also is Fire equally diffused throughout the whole World In the Air it makes Comets and other Igneous Meteors In the Earth it concocts Metals and appears plentifully in Volcanoes whose Fires would not continue alwayes if they were violently detained in those Concavities yea 't is in the Waters too whose saltness and production of Monsters cannot be without Heat Yet being the most active of all Elements it is therefore distributed in much less quantity than the rest Nature having observed the same proportion both in the greater and lesser World Man's Body in which there is less of Fire than of the other Elements Otherwise had the Fire been equal to the rest it would consume all living things to ashes Nevertheless as the fixed Heat of Animals requires reparation by the Influent Heat from the Heart the Soul 's principal seat in like manner the Elementary Fire dispersed in all part of this great body of the World needs the
said Reason having been given Man to correct the Inclinations of the Sensitive Appetite 't is that alone must judge whether it be expedient for him to live long not Sense which makes us judge like beasts That nothing is dearer than Life But Reason illuminated either by Faith or by Philosophy teaches us that this World is the place of our banishment the Body the Soul's Prison which she alwayes carryes about with her Life a continual suffering and War and therefore he fights against Natural Light who maintaines it expedient to prolong so miserable a State For besides the incommodities attending a long Life which after 70. years as David testifies is onely labour and sorrow long Life is equally unprofitable towards attaining Knowlege and Virtue He that lives long can learn nothing new in the World which is but a Revolution and Repetition of the same Effects produc'd alwayes by the same Causes not onely in Nature whose course and changes may be seen in the Revolution of the Four Seasons of the Year but even in Affairs of State and Private Matters wherein nothing is said or done but what hath been practis'd before And as for Virtue the further we are from Childhod the less Innocence and Sanctity we have and Vices ordinarily increase with years The long Life of the first Men having according to some been the probable Cause of the depravation of those Ages CONFERENCE CXL Of the Lethargy AS the Brain is the most eminent and noble of all the parts being the Seat of the Understanding and the Throne of the Reasonable Soul so its diseases are very considerable and the more in that they do not attaque that alone but are communicated to all the other parts which have a notable interest in the offence of their Chief ceasing to diffuse its Animal Spirits destinated to Motion Sense and the Function of the Inferior Members Which Functions are hurt by the Lethargy which deprives a Man of every other Inclination but that to sleep and renders him so forgetful and slothful whence it took its Greek name which signifies sluggish oblivion that he remembers nothing at all being possess'd with such contumacious sleepiness that she shuts his Eyes as soon as he ha's open'd them besides that his Phansie and Reasoning is hurt with a continual gentle Fever Which differences this Symptom from both the sleeping and waking Coma call'd Typhomania the former of which commonly begins in the Fits of Fevers and ends or diminishes at their declination but the Lethargick sleeps soundly and being wak'd by force presently falls a sleep again The latter makes the Patient inclin'd to sleep but he cannot by reason of the variety of Species represented to him in his Phansie The signes of this Malady are deliration heaviness of the Head and pain of the Neck after waking the Matter taking its course along the spine of the back frequent oscitation trembling of the Hands and Head a palish Complexion Eyes and Face pufft up sweatings troubled Urine like that of Cattle a great Pulse languishing and fluctuating Respiration rare with sighing and so great forgetfulness as sometimes not to remember to shut their Mouths after they have open'd nor even to take breath were they not forc'd to it by the danger of suffocation The Conjunct and next Cause of this Malady is a putrid Phlegm whose natural coldness moistens and refrigerates the Brain whilst it s put refactive heat kindles a Fever by the vapors carry'd from the Brain to the Heart and from thence about the whole Now this Phlegmatick Humor is not detained in the Ventricles of the Brain for then it would cause an Apoplexy if the obstruction were total and if partial an Epilepsie wherein the Nerves contract themselves towards their original for discharging of that Matter But 't is onely in the sinuosities and folds of the Brain which imbibing that excessive humidity acquires a cold and moist intemperature from whence proceeds dulness and listelesness to all Actions For as Heat is the Principle of Motion especially when quickned by Dryness so is Cold the Cause of stupidity and sluggishness especially when accompanied with humidity which relaxes the parts and chills their Action In like manner Heat or Dryness inflaming our Spirits the Tunicles of the Brain produce the irregular Motions of Frenzy which is quite contrary to the Lethargy although it produce the same sometimes namely when the Brain after great evacuations acquires a cold and moist intemperature in which case the Lethargy is incurable because it testifies Lesion of the Faculty and abolition of strength But on the contrary a Frensie after a Lethargy is a good sign resolving by its Heat and dissipating the cold humors which produce the same The Second said That coldness being contrary to put refaction Phlegm the coldest of all humors cannot easily putrifie in the Brain which is cold too of its own nature much less acquire a Heat sufficient to communicate it self to the Heart and there excite a Fever it being more likely for such adventitious Heat to cause in the Brain rather the impetuous motions of a Frenzy than the dulness and languor of a Lethargy Nor is it less then absurd to place two enemy-qualities in the same Subject to wit Cold and Heat whereof the one causes sleep the other a Fever which I conceive to precede not to follow the Lethargy and which having raised from the Hypochondres to the Brain a Phlegmatick blood mixt with gross vapors there causeth that obscuration of Reason and sluggishness of the whole Body but especially the abolition of the Memory the sutable temperament for which is totally destroyed by excessive humidity Indeed the troubled Urine liquid Digestions Tumors and pains of the Neck bloated Flesh and other such signs accompanying this disease argue that its matter is more in the rest of the Body than in the Brain which suffers onely by Sympathie The Third said If it be true that sleep is the Brother of Death then the Lethargy which is a continual drowsiness with a Fever and Delirium seemes to be a middle Estate between Life and Death which is known by the cessation of Actions most of which fail in those afflicted with this Evil which nevertheless is less then the Carus wherein the sleep is so profound that the Patient feels not when he is prickt or call'd by name but is depriv'd of all Sense and Motion saving that of Respiration which scarce appears in the Catoche or Catalepsie a stranger symptom than any of the former wherein the Eyes remain wide open the whole Body stiff and in the same state and posture wherein it hapned to be when it first seiz'd the same The Cause whereof most say is a cold and moist humor obstructing the hinder part of the Brain but I rather ascribe it to a sudden Congelation of the Animal Spirits as I do the Lethargy to narcotick and somniferous vapors which are the sole Causes of Inclination to sleep which cannot
having at the declining of the day rais'd many aqueous and consequently supreamly cold and the heat whereby they were rais'd abandoning them upon his absence the natural cold of those vapours becomes predominant and returns them by degrees into their first state Which refrigerating the Air makes the night the colder the further the vapours are from their extraneous heat that is to say the nearer day approacheth CONFERENCE CLIV. Whence the whiteness of Snow proceeds THe first attributed the cause thereof to the desiccation of water for experience shews in all sublunary Bodies that dryness whitens as Sea-water becomes white when dry'd to Salt the stalks of Corn Pulse and the leaves of all other Plants wax white as they wither and dry The same happens to the Bones of Animals and grey Hairs on no other cause but siccity since the extremity expos'd to the Air is white but not the root Hence water by its transparence already partaking much of light but which its rarity reflects not to our view is no sooner desiccated into Ice Hail or Snow but it acquires this pure whiteness which humidity again destroys So the high ways white with dust grow black upon rain a wet cloth appears darker then a dry and that some things become black by drying as Coal is because there was heat enough to draw the humidity which was at its Centre to the Circumference but not enough wholly to dry it up as appears in that the same heat continu'd reduces the coal to white ashes which would be as perfectly white as Snow did not the Tincture imprinted thereon by the Salts withstand it for if you urge them further by fire you will make them of a perfect whiteness as appears in Chalks which are made not only of grey and black stones but even of Metals as Ceruse is made of Lead The Second said Whiteness is not a real Colour since it appears in all bodies depriv'd of preceding Colours of all which 't is indifferently susceptible But 't is otherwise with real Colours a subject imbu'd with one of which is not apt to receive all others but some only as Nature hath fram'd the Organs of Sense naked of all sensible objects to the end they might be susceptible of the same Wooll dy'd into a sadder colour cannot receive a lighter and black Wooll admits none at all but white being natural to every subject that hath no colour is capable of receiving all So when you wash off the blew or dirty colour of a Band it becomes white Whereby it appears that Whiteness hath the same reference to Colours that Unity hath to Numbers whereof 't is the beginning but is none it self And as 't is the Emblem of Innocence and Purity so also it proceeds from them The Air which is the purest of our Elements for Fire is only in Mixts and water refin'd into vapours which follows the Air in purity hapning to acquire visibility by condensation into Snow cannot represent the same under any other out-side but Whiteness Now that Whiteness is an effect of purity is manifest by the Stars which are represented to us only under the species of Whiteness and cannot be painted but with white in their light which de-albating what it irradiates and leaving the same elsewhere black shews that 't is as the purest so also the whitest thing in the world Likewise Metals are whiter according to their purity Lead is worse then Tin and this then Silver only upon account of their impurity the sole perfect mixture of the yellow incombustible Sulphur of Gold not permitting it to be alter'd and spoil'd of its yellow colour which nearest approacheth whiteness Wherefore Snow being a most pure Body compounded only of two colour-less elements namely Air and Water 't was necessary either that it should have no colour or if any whereby to become visible the principle and origin of all Colours namely White in the perfection with which Nature makes all her Works The Third said That the same difference which appears between the Stars and their Orbs is found between Water and Snow arising only from Density and Rarity As the Star appears white and the rest of the Heaven darker by reason of its rarity so likewise Water seems obscure upon account of its rarity and Snow white upon that of its density The Fourth said If that reason were good then Ice should be whiter then Snow because 't is more solid and yet the contrary appears Besides Snow is so far from being more dense and solid then Water that on the contrary there is less Air in Water then in Ice which is more close and compact then Snow the swimming of Ice upon the Water arguing some aerious parts included in it at the time of its congelation which is not and cannot be made without air Wherefore Snow differs from Water only by its figure or accidental form which reduceth it into flocks congealed by cold in a cloud not as it is resolv'd into Rain for then 't would prove Hail but whilst yet a vapour in the region of the Air. So then in this figure alone is the reason of the whiteness of Snow to be sought which is not found in water partly by reason of its transparence and partly because its smooth surface gives no hold to the visual ray Which is the reason why Water is pictur'd with a blew and darkish colour Thus burnish'd Silver as that of Looking-glasses seems dark if compar'd to rough Silver which doth not dissipate our visual Spirits as that former doth Hence Ice is much whiter then water as being less smooth The Fifth said That 't is proper to cold to whiten as 't is to heat to blacken Thus Southern People are either black or tawney Northern white and the Hair of both grows white with old age by reason of the coldness thereof All the cold parts of our Body are white as the Brain Bones Cartilages Membranes Fat and Skin Linen and Wax are whitened by the coldness of the night For the same reason not only Snow but Hail Frost Ice Rime and all other cold Meteors are of the same colour The Sixth said That though the whiteness of Snow was disputed by Anaxagoras and Armenia produces red by mixture of the exhalations of Vermillion with the ordinary vapors which the Sun raises from the water yet this whiteness is as manifest as the causes are hid no less then those of light which is the colour of Celestial Bodies as colours are the light of Terrestrial However this whiteness seems to proceed from a mixture of Air and Water as appears in froth whose consistence is like that of Snow the whiteness whereof possibly is increas'd by the Spirits wherewith Snow abounds which are luminous Bodies whereof the fertility caus'd by Snow is an Argument to which Spirits which Frost hath not may be ascrib'd what Galen affirms namely that Fish cover'd with Snow become more delicious for to the Moon it can with no more reason be
Earth and so draw all Loadstones and what-ever Iron is rub'd with them towards themselves The Second said That the Cause of this Motion ought rather to be ascrib'd to some thing in Heaven because in Ships that approach that Island of Loadstone the Needle still tends towards the North and not towards that Island The truth is there is a Sympathy between some parts and things of the world the Female Palm bends towards the Male Straw moves to Amber all Flowers and particularly the Marigold and Sun-flower incline towards the Sun the Loadstone towards the Iron and the tail of the little Bear which if we conceive to be of the Nature of Iron there is no more inconvenience therein than in the other Properties attributed to the rest of the Starrs and Planets The Third said That to wave what other Authors have said this inclination of the Loadstone proceeds from the great humidity of the North which is the Centre of all waters towards which they tend For the Loadstone being extreamly dry and oblig'd to tend some way when it is in aequilibrio it veers towards that quarter to seek the moisture which is wanting to it as also doth Steel heated red hot and suffer'd to cool of it self if it be lay'd upon a piece of the wood floating gently in water The Fourth was of Cardan's Opinion who conceives that stones are animated and consequently that the soul of the Loadstone carries it to the search of its food and its good as the the Eye affects Light a Whelp is carry'd to his Dam's teat and a Sheep naturally eschews a Wolf For it matters not whether we hold That the touch'd Load-stone moves towards the tail of the little Bear which is distant five degrees from the Arctick Pole or Whether it flie and recoil from the part of Heaven diametrically opposite thereunto Now that the Loadstone is animated appears by its being nourisht with and kept in the filings of Steel by its growing old and by the diminishing of its attractive virtue with age just as the virtues of other bodies do Wherefore 't is probable that the Loadstone's soul either with-draws it from that part which is contrary to it or else leads it towards its good Indeed two different inclinations are observ'd in this Stone depending upon the situation it had in the Mine one Northwards whither it turnes the part that once lay that way the other Southwards whither it turns its opposite part But the Experiment of Iron loosing its attraction by being rub'd on the Loadstone the contrary way to which it was rub'd at first is an evident sign of such a soul in it which makes it thus vary its actions The Fifth said That all these accounts leave many difficulties to be resolv'd for if the Loadstone mov'd towards those great Adamantine Mountains of Ilva then they would draw only that and not Iron if Iron too why not before 't is rub'd with a Loadstone Nor doth this inclination of the Loadstone proceed from its dryness for then plain Iron which is as dry Pumice Lime and Plaster which are dryer should have the same effect Besides that there is not such want of humidity as that this stone should seek it Northwards the Mediterranean and the Main Ocean being nearer hand As for Heaven the Cause is no less obscure there and the terms of Sympathy and Antipathy differ not much from those which profess naked Ignorance The second Opinion hath most probability for since the two pieces of a Loadstone cut parallel to the Axis have so great a community of inclinations that a Needle touch'd with one piece is mov'd at any distance whatsoever according to the motion of another toucht with the other piece why may we not admit that the tail of the little Bear or its neighbouring parts are of a Magnetical Nature and have the same community with our Terrestrial Loadstone according to that Maxim in Trismegistus's Smaragdine-Table That which is above is as that which is below CONFERENCE CXCVII What Sect of Philosophers is most to be follow'd ALl the Sciences confess Obligations to Philosophy Divinity draws Ratiocinations from it Eloquence is diffuse Logick and Rhetorick is not to be learnt but after Philosophy Civil Law being wholly founded upon Morality is nothing but an effect of it whilst it teaches us to do voluntarily what the Laws makes us practise by force Physick supposes excellent skill in Philosophy since the Physician begins where the Naturalist ends Now there are so many Sects of Philosophers that to follow them all is to fall into manifest contradictions and to adhere to one alone is to be in great danger of mistaking the worst That which keeps us from being able to make a good choice is the little knowledge we have of these Sects and the Probability each seems to have and therefore 't is requisite to examine them in general in order to drawing a general conclusion And because Saint Augustine cites almost three hundred Opinions touching the Supream Good and as many may be brought touching other points of the Sciences I shall only take notice of the famousest Sects as seeming the most rational and most follow'd And let us compare the always contentious Peripatericks and the Stoicks together The end of the former was to contemplate and understand things the latter aim'd more to do good than to know it their design was Speculation the scope of these Practici I side with the former because that Science which embellisheth Man's noblest part his Understanding is the most sublime and consequently the most considerable And as the Understanding is more excellent than the Will so is Theory in matter Science than Exercise Acts of Virtue depending on the Acts of Reason and those of Reason not depending on those of Liberty Besides that is most to be esteem'd which must render us blessed and that is the knowledge of God and of the Creatures in God and in themselves which is to constitute the Beatifick Vision The Second said That Men ought not to get knowledge only to know but to operate comformably to their knowledge Truth would be either useless or dangerous if it lead us not to practise And though the Will is one Sense subordinate to the Understanding yet it commands the same in another To know how to do well and yet to do ill is a double crime And if knowledge alone could make happy the Devils would be soon in Heaven since Divines tell us the least of them hath more natural knowledge than all Mankind together Now the Opinion of the Stoicks regulating the Acts of our Wills and composing our Manners suitable to Reason seems to place the steps which must raise us to the highest pitch of Felicity Wherefore I conclude that the Curious may follow the first Sect of these namely the Peripateticks but good men must necessarily adhere to that of the Stoicks The Third said That there are three other Sects which seem to comprize all the rest