Justice is a contract of expediency, entered upon to prevent men harming or being harmed.

For a wrongdoer to be undetected is difficult; and for him to have confidence that his concealment will continue is impossible.

Is he neither able nor willing? Then why call him God?

Let no young man delay the study of philosophy, and let no old man become weary of it; for it is never too early nor too late to care for the well-being of the soul.

When we say that pleasure is the end, we do not mean the pleasure of the profligate or that which depends on physical enjoyment--as some think who do not understand our teachings, disagree with them, or give them an evil interpretation--but by pleasure we mean the state wherein the body is free from pain and the mind from anxiety.

What men fear is not that death is annihilation but that it is not.

The mind that is much elevated and insolent with prosperity, and cast down with adversity, is generally abject and base.