"The female is, as it were, a mutilated male, and the catamenia are semen, only not pure; for there is only one thing they have not in them, the principle of soul."

"Those who educate children well are more to be honored than they who produce them; for these only gave them life, those the art of living well."

"One must learn by doing the thing, for though you think you know it, you have no certainty until you try."

"Wit is educated insolence."

"A man without regrets cannot be cured."

"No one loves the man whom he fears."

"The roots of education are bitter, but the fruit is sweet."

"Wishing to be friends is quick work, but friendship is a slow ripening fruit."

"If one way be better than another, that you may be sure is nature's way."

"Revolutions are not about trifles but spring from trifles."

"Change in all things is sweet."

"The end of labor is to gain leisure."

"Nor is he liberal who gives with pain; for he would prefer the wealth to the noble act, and this is not characteristic of a liberal man. But no more will the liberal man take from wrong sources; for such taking is not characteristic of the man who sets no store by wealth."

"Yes the truth is that men's ambition and their desire to make money are among the most frequent causes of deliberate acts of injustice."

"Art not only imitates nature but also completes its deficiencies."

"Education is an ornament in prosperity and a refuge in adversity."

"All men by nature desire knowledge."

"A true friend is one soul in two bodies."

"We must no more ask whether the soul and body are one than ask whether the wax and the figure impressed on it are one."

"Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit."

"One swallow does not make a summer,neither does one fine day; similarly one day or brief time of happiness does not make a person entirely happy."

"It is a great thing, indeed, to make a proper use of the poetical forms, as also of compounds and strange words. But the greatest thing by far is to be a master of metaphor. It is the one thing that cannot be learnt from others; and it is also a sign of genius, since a good metaphor implies an intuitive perception of the similarity in dissimilars."

"For the things we have to learn before we can do them, we learn by doing them."

"The void is 'not-being,' and no part of 'what is' is a 'not-being,'; for what 'is' in the strict sense of the term is an absolute plenum. This plenum, however, is not 'one': on the contrary, it is a 'many' infinite in number and invisible owing to the minuteness of their bulk."

"Suffering becomes beautiful when anyone bears great calamities with cheerfulness, not through insensibility but through greatness of mind."

"We maintain, therefore, that the first essential, the life and soul, so to speak, of Tragedy is the Plot; and that the Characters come second-compare the parallel in painting, where the most beautiful colours laid on without order will not give one the same pleasure as a simple black-and-white sketch of a portrait."

"And further, observing that all this indeterminate substance is in motion, and that no true predication can be made of that which changes, they supposed that it is impossible to make any true statement about that which is in all ways and entirely changeable. For it was from this supposition that there blossomed forth the most extreme view of those which we have mentioned, that of the professed followers of Heraclitus, and such as Cratylus held, who ended by thinking that one need not say anything, and only moved his finger; and who criticized Heraclitus for saying that one cannot enter the same river twice, for he himself held that it cannot be done even once."

"Between friends there is no need of justice."

"It is not always the same thing to be a good man and a good citizen."

"For he who lives as passion directs will not hear argument that dissuades him, nor understand it if he does; and how can we persuade one in such a state to change his ways?"

"A great city is not to be confounded with a populous one."

"Plato is dear to me, but dearer still is truth."

"With regard to sleep and waking, we must consider what they are: whether they are peculiar to soul or to body, or common to both; and if common, to what part of soul or body the appertain: further, from what cause it arises that they are atributes of animals, and whether all animals share in them both, or some partake of the one only, others of the other only, or some partake of neither and some of both."

"Hence poetry is something more philosophic and of graver import than history, since its statements are rather of the nature of universals, whereas those of history are singulars."

"No one would choose a friendless existence on condition of having all the other things in the world."

"We live in deeds, not years; in thoughts, not breaths; in feelings, not in figures on a dial. We should count time by heart throbs. He most lives who thinks most, feels the noblest, acts the best."

"No notice is taken of a little evil, but when it increases it strikes the eye."

"The energy of the mind is the essence of life."

"Every art and every inquiry, and similarly every action and choice, is thought to aim at some good; and for this reason the good has rightly been declared to be that at which all things aim."

"In making a speech one must study three points: first, the means of producing persuasion; second, the language; third the proper arrangement of the various parts of the speech."

"Happiness is a quality of the soul...not a function of one's material circumstances."

"The saddest of all tragedies - the wasted life."

"To write well, express yourself like the common people, but think like a wise man."

"Well begun is half done."

"At his best, man is the noblest of all animals; separated from law and justice he is the worst."

"The best friend is the man who in wishing me well wishes it for my sake."

"To amuse oneself in order that one may exert oneself, as Anacharsis puts it, seems right; for amusement is a sort of relaxation, and we need relaxation because we cannot work continuously."

"Persuasion is achieved by the speaker's personal character when the speech is so spoken as to make us think him credible. We believe good men more fully and more readily than others: this is true generally whatever the question is, and absolutely true where exact certainty is impossible and opinions are divided."

"Knowing yourself is the beginning of all wisdom."

"He who is to be a good ruler must have first been ruled."