The one thing worth living for is to keep one's soul pure.

He who pays no attention to what his neighbor does, says or thinks, preferring to concentrate on making his own actions appropriate and justifiable, better uses his time.

Do not act as if you were going to live ten thousand years. Death hangs over you. While you live, while it is in your power, be good.

...the sole thing of which any man can be deprived is the present; since this is all he owns, and nobody can lose what is not his.

Don't go on discussing what a good person should be. Just be one.

I search after truth, by which man never yet was harmed.

To them that ask: Where hast thou seen the Gods, or how knowest thou certainly that there be Gods, that thou art so devout in their worship? I answer: Neither have I seen my own soul, and yet I respect and honor it.