There is no learning without remembering.

Every pleasure or pain has a sort of rivet with which it fastens the soul to the body and pins it down and makes it corporeal, accepting as true whatever the body certifies.

You are wrong, sir, if you think that a man who is any good at all should take into account the risk of life or death; he should look to this only in his actions, whether what he does is right or wrong, whether he is acting like a good or a bad man.

Nothing is so well learned as that which is discovered.

It is not difficult to avoid death. It is much more difficult to avoid wickedness, for it runs faster than death.

I know that I know nothing.

Do you suppose that I should have lived as long as I have if I had moved in the sphere of public life, and conducting myself in that sphere like an honorable man, had always upheld the cause of right, and conscientiously set this end above all other things? Not by a very long way, gentlemen; neither would any other man.