Socrates

“I know what I do not know.”

I desire only to know the truth, and to live as well as I can...And, to the utmost of my power, I exhort all other men to do the same...I exhort you also to take part in the great combat, which is the combat of life, and greater than every other earthly conflict.

It is the greatest good for an individual to discuss virtue (aka areté) every day...for the unexamined life is not worth living.

False words are not only evil in themselves, but they infect the soul with evil.

The way to gain a good reputation is to endeavor to be what you desire to appear.

A man should inure himself to voluntary labor, and not give up to indulgence and pleasure, as they beget no good constitution of body nor knowledge of mind.

There is only one good, knowledge, and one evil, ignorance.

The hour of departure has arrived, and we go our ways - I go to die, and you to live. Which is the better, God only knows.

Crito, I owe a cock to Asclepius; will you remember to pay the debt?

The end of life is to be like God, and the soul following God will be like Him.