“One should never do wrong in return, nor mistreat any man, no matter how one has been mistreated by him.”

“One who is injured ought not to return the injury, for on no account can it be right to do an injustice; and it is not right to return an injury, or to do evil to any man, however much we have suffered from him.”

“Do you feel no compunction, Socrates, at having followed a line of action which puts you in danger of the death penalty?'I might fairly reply to him, 'You are mistaken, my friend, if you think that a man who is worth anything ought to spend his time weighing up the prospects of life and death. He has only one thing to consider in performing any action--that is, whether he is acting rightly or wrongly, like a good man or a bad one.”

“The law presumably says that it is finest to keep as quiet as possible in misfortunes and not be irritated, since the good and bad in such things aren't plain, nor does taking it hard get one anywhere, not are any of the human things worthy of great seriousness.... One must accept the fall of the dice and settle one's affairs accordingly-- in whatever way argument declares would be best. One must not behave like children who have stumbled and who hold on to the hurt place and spend their time in crying out; rather one must always habituate the soul to turn as quickly as possible to curing and setting aright what has fallen and is sick, doing away with lament by medicine.”

“No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable.”

“It is better to change an opinion than to persist in a wrong one.”

“Is there not one true coin for which all things ought to exchange?- and that is wisdom; and only in exchange for this, and in company with this, is anything truly bought or sold, whether courage, temperance or justice. And is not all true virtue the companion of wisdom, no matter what fears or pleasures or other similar goods or evils may or may not attend her? But the virtue which is made up of these goods, when they are severed from wisdom and exchanged with one another, is a shadow of virtue only, nor is there any freedom or health or truth in her; but in the true exchange there is a purging away of all these things, and temperance, and justice, and courage, and wisdom herself, are a purgation of them.”