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Hippolytus
But Heraclitus, a natural philosopher of Ephesus, surrendered himself to universal grief, condemning the ignorance of the entire of life, and of all men; nay, commiserating the (very) existence of mortals, for he asserted that he himself knew everything, whereas the rest of mankind nothing.[69] But he also advanced statements almost in concert with Empedocles, saying that the originating principle of all things is discord and friendship, and that the Deity is a fire endued with intelligence, and that all things are borne one upon another, and never are at a standstill; and just as Empedocles, he affirmed that the entire locality about us is full of evil things, and that these evil things reach as far as the moon, being extended from the quarter situated around the earth, and that they do not advance further, inasmuch as the entire space above the moon is more pure. So also it seemed to Heraclitus.
After these arose also other natural philosophers, whose opinions we have not deemed it necessary to declare, (inasmuch as) they present no diversity to those already specified. Since, however, upon the whole, a not inconsiderable school has sprung (from thence), and many natural philosophers subsequently have arisen from them, each advancing different accounts of the nature of the universe, it seems also to us advisable, that, explaining the philosophy that has come down by succession from Pythagoras, we should recur to the opinions entertained by those living after the time of Thales, and that, furnishing a narrative of these, we should approach the consideration of the ethical and logical philosophy which Socrates and Aristotle originated, the former ethical, and the latter logical.[70]
Anaximander, then, was the hearer of Thales. Anaximander was son of Praxiadas, and a native of Miletus. This man said that the originating principle of existing things is a certain constitution of the Infinite, out of which the heavens are generated, and the worlds therein; and that this principle is eternal and undecaying, and comprising all the worlds. And he speaks of time as something of limited generation, and subsistence, and destruction. This person declared the Infinite to be an originating principle and element of existing things, being the first to employ such a denomination of the originating principle. But, moreover, he asserted that there is an eternal motion, by the agency of which it happens that the heavens[71] are generated; but that the earth is poised aloft, upheld by nothing, <page 14>continuing (so) on account of its equal distance from all (the heavenly bodies); and that the figure of it is curved, circular,[72] similar to a column of stone.[73] And one of the surfaces we tread upon, but the other is opposite.[74] And that the stars are a circle of fire, separated from the fire which is in the vicinity of the world, and encompassed by air. And that certain atmospheric exhalations arise in places where the stars shine; wherefore, also, when these exhalations are obstructed, that eclipses take place. And that the moon sometimes appears full and sometimes waning, according to the obstruction or opening of its (orbital) paths. But that the circle of the sun is twenty-seven times[75] larger than the moon, and that the sun is situated in the highest (quarter of the firmament); whereas the orbs of the fixed stars in the lowest. And that animals are produced (in moisture[76]) by evaporation from the sun. And that man was, originally, similar to a different animal, that is, a fish. And that winds are caused by the separation of very rarified exhalations of the atmosphere, and by their motion after they have been condensed. And that rain arises from earth’s giving back (the vapours which it receives) from the (clouds[77]) under the sun. And that there are flashes of lightning when the wind coming down severs the clouds. This person was born in the third year of the xlii. Olympiad.[78]
But Anaximenes, who himself was also a native of Miletus, and son of Eurystratus, affirmed that the originating principle is infinite air, out of which are generated things existing, those which have existed, and those that will be, as well as gods and divine (entities), and that the rest arise from the offspring of this. But that there is such a species of air, when it is most even, which is imperceptible to vision, but capable of being manifested by cold and heat, and moisture and motion, and that it is continually in motion; for that whatsoever things undergo alteration, do not change if there is not motion. For that it presents a different appearance according as it is condensed and attenuated, for when it is dissolved into what is more attenuated that fire is produced, and that when it is moderately condensed again into air that a cloud is formed from the air by virtue of the contraction;[79] but when condensed still more, water, (and) that when the condensation is carried still further, earth is formed; and when condensed to the very highest degree, stones. Wherefore, that the dominant principles of generation are contraries,—namely, heat and cold. And that the expanded earth is wafted along upon the air, and in like manner both sun and moon and the rest of the stars; for all things being of the nature of fire, are wafted about through the expanse of space, upon the air. And that the stars are produced from earth by reason of the mist which arises from this earth; and when this is attenuated, that fire is produced, and that the stars consist of the fire which is being borne aloft. But also that there are terrestrial natures in the region of the stars carried on along with them. And he says that the stars do not move under the earth, as some have supposed, but around the earth,[80] just as a cap is turned round our head; and that the sun is hid, not by being under the earth, but because covered by the higher portions of the earth, and on account of the greater distance that he is from us. But that the stars do not emit heat on account of the length of distance; and that the winds are produced when the condensed air, becoming rarified, is borne on; and that when collected and thickened still further, clouds are generated, and thus a change made into water. And that hail is produced when the water borne down from the clouds becomes congealed; and that snow is generated when these very clouds, being more moist, acquire congelation; and that lightning is caused when the clouds are parted by force of the winds; for when these are sundered there is produced a brilliant and fiery flash. And that a rainbow is produced by reason of the rays of the sun falling on the collected air. And that an earthquake takes place when the earth is altered into a larger (bulk) by heat and cold. These indeed, then, were the opinions of Anaximenes. This (philosopher) flourished about the first year of the lviii. Olympiad.[81]
After this (thinker) comes Anaxagoras,[82] son of Hegesibulus,[83] a native of Clazomenæ. This person affirmed the originating principle of the universe to be mind and matter; mind being <page 15>the efficient cause, whereas matter that which was being formed. For all things coming into existence simultaneously, mind supervening introduced order. And material principles, he says, are infinite; even the smaller of these are infinite.[84] And that all things partake of motion by being moved by mind, and that similar bodies coalesce. And that celestial bodies were arranged by orbicular motion. That, therefore, what was thick and moist, and dark and cold, and all things heavy, came together into the centre, from the solidification of which earth derived support; but that the things opposite to these—namely, heat and brilliancy, and dryness and lightness—hurried impetuously into the farther portion of the atmosphere. And that the earth is in figure plane; and that it continues suspended aloft, by reason of its magnitude, and by reason of there being no vacuum, and by reason of the air, which was most powerful, bearing along the wafted earth. But that among moist substances on earth, was the sea, and the waters in it; and when these evaporated (from the sun), or had settled under, that the ocean was formed in this manner, as well as from the rivers that from time to time flow into it. And that the rivers also derive support from the rains and from the actual waters in the earth; for that this is hollow, and contains water in its caverns. And that the Nile is inundated in summer, by reason of the waters carried down into it from the snows in northern (latitudes).[85] And that the sun and moon and all the stars are fiery stones, that were rolled round by the rotation of the atmosphere. And that beneath the stars are sun and moon, and certain invisible bodies that are carried along with us; and that we have no perception of the heat of the stars, both on account of their being so far away, and on account of their distance from the earth; and further, they are not to the same degree hot as the sun, on account of their occupying a colder situation. And that the moon, being lower than the sun, is nearer us. And that the sun surpasses the Peloponnesus in size. And that the moon has not light of its own, but from the sun. But that the revolution of the stars takes place under the earth. And that the moon is eclipsed when the earth is interposed, and occasionally also those (stars) that are underneath the moon. And that the sun (is eclipsed) when, at the beginning of the month, the moon is interposed. And that the solstices are caused by both sun and moon being repulsed by the air. And that the moon is often turned, by its not being able to make head against the cold. This person was the first to frame definitions regarding eclipses and illuminations. And he affirmed that the moon is earthy, and has in it plains and ravines. And that the milky way is a reflection of the light of the stars which do not derive their radiance from the sun;[86] and that the stars, coursing (the firmament) as shooting sparks, arise out of the motion of the pole. And that winds are caused when the atmosphere is rarified by the sun, and by those burning orbs that advance under the pole, and are borne from (it). And that thunder and lightning are caused by heat falling on the clouds. And that earthquakes are produced by the air above falling on that under the earth; for when this is moved, that the earth also, being wafted by it, is shaken. And that animals originally came into existence[87] in moisture, and after this one from another; and that males are procreated when the seed secreted from the right parts adhered to the right parts of the womb, and that females are born when the contrary took place. This philosopher flourished in the first year of the lxxxviii. Olympiad,[88] at which time they say that Plato also was born. They maintain that Anaxagoras was likewise prescient.
Archelaus was by birth an Athenian, and son of Apollodorus.[89] This person, similarly with Anaxagoras, asserted the mixture of matter, and enunciated his first principles in the same manner. This philosopher, however, held that there is inherent immediately in mind a certain mixture; and that the originating principle of motion is the mutual separation of heat and cold, and that the heat is moved, and that the cold remains at rest. And that the water, being dissolved, flows towards the centre, where the scorched air and earth are produced, of which the one is borne upwards and the other remains beneath. And that the earth is at rest, and that on this account it came into existence; and that it lies in the centre, being no part, so to speak, of the universe, delivered from the conflagration; and that from this, first in a state of ignition, is the nature of the stars, of which indeed the largest is the sun, and next to this the moon; and of the rest some less, but some greater. And he says that the heaven was inclined at an angle, and so that the sun diffused light over the earth, and made the atmosphere transparent, and the ground dry; for that at first it was a sea, <page 16>inasmuch as it is lofty at the horizon and hollow in the middle. And he adduces, as an indication of the hollowness, that the sun does not rise and set to all at the same time, which ought to happen if the earth was even. And with regard to animals, he affirms that the earth, being originally fire in its lower part, where the heat and cold were intermingled, both the rest of animals made their appearance, numerous and dissimilar,[90] all having the same food, being nourished from mud; and their existence was of short duration, but afterwards also generation from one another arose unto them; and men were separated from the rest (of the animal creation), and they appointed rulers, and laws, and arts, and cities, and the rest. And he asserts that mind is innate in all animals alike; for that each, according to the difference of their physical constitution, employed (mind), at one time slower, at another faster.[91]
Natural philosophy, then, continued from Thales until Archelaus. Socrates was the hearer of this (latter philosopher). There are, however, also very many others, introducing various opinions respecting both the divinity and the nature of the universe; and if we were disposed to adduce all the opinions of these, it would be necessary to compose a vast quantity of books. But, reminding the reader of those whom we especially ought—who are deserving of mention from their fame, and from being, so to speak, the leaders to those who have subsequently framed systems of philosophy, and from their supplying them with a starting-point towards such undertakings—let us hasten on our investigations towards what remains for consideration.
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