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April 10, 2026
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"It takes a wise man to discover a wise man."
"Alcæus mentions Aristodemus in these lines:— ’T is money makes the man; and he who ’s none Is counted neither good nor honourable."
"Thales said there was no difference between life and death. "Why, then," said some one to him, "do not you die?" "Because," said he, "it does make no difference.""
"When Thales was asked what was difficult, he said, "To know one’s self." And what was easy, "To advise another.""
"He said that men ought to remember those friends who were absent as well as those who were present."
"The apophthegm "Know thyself" is his."
"In the time of Pythagoras that proverbial phrase Ipse dixit was introduced into ordinary life."
"Among what he called his precepts were such as these: Do not stir the fire with a sword. Do not sit down on a bushel. Do not devour thy heart."
"Xenophanes was the first person who asserted... that the soul is a spirit."
"Writers differ with respect to the apophthegms of the Seven Sages, attributing the same one to various authors."
"That virtue was sufficient of herself for happiness."
"Xenophanes speaks thus:— And no man knows distinctly anything, And no man ever will."
"One of the sophisms of Chrysippus was, "If you have not lost a thing, you have it.""
"Pythagoras used to say that he had received as a gift from Mercury the perpetual transmigration of his soul, so that it was constantly transmigrating and passing into all sorts of plants or animals."
"Apollodorus says, "If any one were to take away from the books of Chrysippus all the passages which he quotes from other authors, his paper would be left empty.""
"They also say that God is an animal immortal, rational, perfect, and intellectual in his happiness, unsusceptible of any kind of evil, having a foreknowledge of the universe and of all that is in the universe; however, that he has not the figure of a man; and that he is the creator of the universe, and as it were the Father of all things in common, and that a portion of him pervades everything."
"That the gods superintend all the affairs of men, and that there are such beings as dæmons."
"He calls drunkenness an expression identical with ruin."
"Democritus says, "But we know nothing really; for truth lies deep down.""
"The Stoics also teach that God is unity, and that he is called Mind and Fate and Jupiter, and by many other names besides."
"But Chrysippus, Posidonius, Zeno, and Boëthus say, that all things are produced by fate. And fate is a connected cause of existing things, or the reason according to which the world is regulated."
"δοκεῖ δὲ αὐτῶι τάδε· ἀρχὰς εἶναι τῶν ὅλων ἀτόμους καὶ κενόν, τὰ δ'ἀλλα πάντα νενομίσθαι [δοξάζεσθαι]. (Diogenes Laërtius, Democritus, Vol. IX, 44)"
"νόμωι (γάρ φησι) γλυκὺ καὶ νόμωι πικρόν, νόμωι θερμόν, νόμωι ψυχρόν, νόμωι χροιή, ἐτεῆι δὲ ἄτομα καὶ κενόν (Tetralogies of Thrasyllus, 9; Sext. Emp. adv. math. VII 135)"
"We know nothing accurately in reality, but [only] as it changes according to the bodily condition, and the constitution of those things that flow upon [the body] and impinge upon it."
"Medicine heals diseases of the body, wisdom frees the soul from passions."
"Coition is a slight attack of apoplexy. For man gushes forth from man, and is separated by being torn apart with a kind of blow."
"Eudoxes... not only based the method [of exhaustion] on rigorous demonstration... but he actually applied the method to find the volumes (1) of any pyramid, (2) of the cone, proving (1) that any pyramid is one third part of the prism which has the same base and equal height, and (2) that any cone is one third part of the cylinder which has the same base and equal height. Archimedes, however, tells us the remarkable fact that these two theorems were first discovered by Democritus, though he was not able to prove them (which no doubt means, not that he gave no sort of proof, but that he was not able to establish the propositions by the rigorous methods of Eudoxes. Archimedes adds that we must give no small share of the credit for these theorems to Democritus... another testimony to the marvellous powers, in mathematics as well as in other subjects, of the great man who, in the words of Aristotle, "seems to have thought of everything". ...Democritus wrote on irrationals; he is also said to have discussed the question of two parallel sections of a cone (which were evidently supposed to be indefinitely close together), asking whether we are to regard them as equal or unequal... Democritus was already close on the track of infinitesimals."
"The Greeks elaborated several theories of vision. According to the Pythagoreans, Democritus, and others vision is caused by the projection of particles from the object seen, into the pupil of the eye. On the other hand Empedocles, the Platonists, and Euclid held the strange doctrine of ocular beams, according to which the eye itself sends out something which causes sight as soon as it meets something else emanated by the object."
"The atomic theory was not generally accepted in the time of Democritus, largely because of its deterministic character, for it allows no chance, choice, or free will."
"One thing of course was a fundamental necessity to the atomic world-view. There must be empty space for the atoms to move about in. The hallmark of Democritus’s thought, as Aristotle noted approvingly, was a determination to account for apparent fact and not be led astray by abstract argument. Hence he said that Parmenides’s denial of the existence of void could not be upheld. It was contrary to common sense. Aware however that he was flying in the face of that great authority, he made his denial with a kind of schoolboy daring, for according to Aristotle he put it in the form: ‘What is not does exist, no less than what is.’ If material atoms were the only real substance, then empty space was not real in the same sense. Dimly aware that there must be some way out, the atomists did not yet command a language capable of such a phrase as ‘not in the same sense’, and paradox was their only resource."
"Men in their prayers beg the gods for health, not knowing that this is a thing they have in their own power. Through their incontinence undermining it, they themselves become, because of their passions, the betrayers of their own health."
"Men achieve tranquillity through moderation in pleasure and through the symmetry of life. Want and superfluity are apt to upset them and to cause great perturbations in the soul. The souls that are rent by violent conflicts are neither stable nor tranquil. One should therefore set his mind upon the things that are within his power, and be content with his opportunities, nor let his memory dwell very long on the envied and admired of men, nor idly sit and dream of them. Rather, he should contemplate the lives of those who suffer hardship, and vividly bring to mind their sufferings, so that your own present situation may appear to you important and to be envied, and so that it may no longer be your portion to suffer torture in your soul by your longing for more. For he who admires those who have, and whom other men deem blest of fortune, and who spends all his time idly dreaming of them, will be forced to be always contriving some new device because of his [insatiable] desire, until he ends by doing some desperate deed forbidden by the laws. And therefore one ought not to desire other men's blessings, and one ought not to envy those who have more, but rather, comparing his life with that of those who fare worse, and laying to heart their sufferings, deem himself blest of fortune in that he lives and fares so much better than they. Holding fast to this saying you will pass your life in greater tranquillity and will avert not a few of the plagues of life—envy and jealousy and bitterness of mind."
"All who delight in the pleasures of the belly, exceeding all measure in eating and drinking and love, find that the pleasures are brief and last but a short while—only so long as they are eating and drinking—but the pains that come after are many and endure. The longing for the same things keeps ever returning, and whenever the objects of one's desire are realized forthwith the pleasure vanishes, and one has no further use for them. The pleasure is brief, and once more the need for the same things returns."
"Throw moderation to the winds, and the greatest pleasures bring the greatest pains."
"A life without a holiday is like a long journey without an inn to rest at."
"The pleasures that give most joy are the ones that most rarely come."
"We ought to regard the interests of the state as of far greater moment than all else, in order that they may be administered well; and we ought not to engage in eager rivalry in despite of equity, nor arrogate to ourselves any power contrary to the common welfare. For a state well administered is our greatest safeguard. In this all is summed up: When the state is in a healthy condition all things prosper; when it is corrupt, all things go to ruin."
"Fortune is lavish with her favors, but not to be depended on. Nature on the other hand is self-sufficing, and therefore with her feebler but trustworthy [resources] she wins the greater meed] of hope."
"The right-minded man, ever inclined to righteous and lawful deeds, is joyous day and night, and strong, and free from care. But if a man take no heed of the right, and leave undone the things he ought to do, then will the recollection of no one of all his transgressions bring him any joy, but only anxiety and self-reproaching."
"Now as of old the gods give men all good things, excepting only those that are baneful and injurious and useless. These, now as of old, are not gifts of the gods: men stumble into them themselves because of their own blindness and folly."
"An evil and foolish and intemperate and irreligious life should not be called a bad life, but rather, dying long drawn out."
"(Democritus said he would rather discover a single demonstration than win the throne of Persia.)"
"Men have made an idol of luck as an excuse for their own thoughtlessness. Luck seldom measures swords with wisdom. Most things in life quick wit and sharp vision can set right."
"Of all things the worst to teach the young is dalliance, for it is this that is the parent of those pleasures from which wickedness springs."
"In the weightiest matters we must go to school to the animals, and learn spinning and weaving from the spider, building from the swallow, singing from the birds,—from the swan and the nightingale, imitating their art."
"The friendship of one wise man is better than the friendship of a host of fools."
"No one deserves to live who has not at least one good-man-and-true for a friend."
"Seek after the good, and with much toil shall ye find it; the evil turns up of itself without your seeking it."
"The enmity of one's kindred is far more bitter than the enmity of strangers."
"For a man petticoat government is the limit of insolence."