"Laws are partly formed for the sake of good men, in order to instruct them how they may live on friendly terms with one another, and partly for the sake of those who refuse to be instructed, whose spirit cannot be subdued, or softened, or hindered from plunging into evil."

"Is not the love of learning identical with a philosophical disposition?"

"If one has made a mistake, and fails to correct it, one has made a greater mistake."

"If women are expected to do the same work as men, we must teach them the same things."

"Those who have knowledge are more confident than those who have no knowledge, and they are more confident after they have learned than before."

"You don’t seem to love money too much. And those who haven’t made their own money are usually like you. But those who have made it for themselves are twice as fond of it as those who haven’t."

"Those who are able to see beyond the shadows and lies of their culture will never be understood, let alone believed, by the masses."

"Whenever anyone informs us that he has found a man who knows all the arts, and all things else that anybody knows, and every single thing with a higher degree of accuracy than any other man –whoever tells us this, I think that we can only imagine him to be a simple creature who is likely to have been deceived by some wizard or actor whom he met, and whom he thought all-knowing, because he himself was unable to analyze the nature of knowledge and ignorance and imitation."

"No intelligent man will ever be so bold as to put into language those things which his reason has contemplated."

"Men say that everyone is naturally a lover of himself, and that it is right that it should be so. This is a mistake; for in fact the cause of all the blunders committed by man arises from this excessive self-love. For the lover is blinded by the object loved, so that he passes a wrong judgment upon what is just, good, and beautiful, thinking that he ought always to honor what belongs to himself, in preference to truth. For he who intends to be a great man ought to love neither himself nor his own things, but only what is just, whether it happens to be done by himself or by another."

"When anything is in the presence of evil, but is not as yet evil, the presence of good arouses the desire of good in that thing; but the presence of evil, which makes a thing evil, takes away the desire and friendship of the good; for that which was once both good and evil has now become evil only, and the good has no friendship with evil."

"Let the speaker speak truly and the judge decide justly."

"Good actions can strengthen ourselves and inspire good actions to others."

"This feeling of wonder shows that you are a philosopher, since wonder is the only beginning of philosophy."

"The useful is the noble and the hurtful is the base."

"Character is simply habit long continued."

"It is a common saying, and in everybody's mouth, that life is but a sojourn. The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant."

"A sensible man will remember that the eyes may be confused in two ways - by a change from light to darkness or from darkness to light; and he will recognize that the same thing happens to the soul."

"Arithmetic is a kind of knowledge in which the best natures should be trained, and which must not be given up."

"The reason is that they utter these words of theirs not by virtue of a skill, but by a divine power - otherwise, if they knew how to speak well on one topic thanks to a skill, they would know how to speak about every other topic too."