A man can no more make a safe use of wealth without reason than he can of a horse without a bridle.

Is there anyone to whom you entrust a greater number of serious matters than your wife? And is there anyone with whom you have fewer conversations?

I have lived long enough to learn how much there is I can really do without.... He is nearest to God who needs the fewest things.

The Delphic Oracle said I was the wisest of all the Greeks. It is because that I alone, of all the Greeks, know that I know nothing.

The only thing I know is that I know nothing

Be of good cheer about death and know this as a truth, that no evil can happen to a good man, either in life or after death

To live well and honorably and justly are the same thing.