No man has a right to be an amateur in the matter of physical training

To know, is to know that you know nothing. That is the meaning of true knowledge. For a man who claims to have knowledge, while actually knowing nothing, is less smarter than you, who claim to know nothing.

And I say let a man be of good cheer about his soul. When the soul has been arrayed in her own proper jewels - temperance and justice, and courage, and nobility and truth - she is ready to go on her journey when the hour comes.

This is...self-knowled ge-for a man to know what he knows, and what he does not know.

I am wiser than this man, for neither of us appears to know anything great and good; but he fancies he knows something, although he knows nothing; whereas I, as I do not know anything, so I do not fancy I do. In this trifling particular, then, I appear to be wiser than he, because I do not fancy I know what I do not know.

Man's life is like a drop of dew on a leaf.

I was really too honest a man to be a politician and live.

Virtue does not come from wealth, but wealth, and every other good thing which men have comes from virtue.

Nobody knows what death is, nor whether to man it is perchance the greatest of blessings, yet people fear it as if they surely knew it to be the worse of evils.