Which is recorded of Socrates, that he was able both to abstain from, and to enjoy, those things which many are too weak to abstain from, and cannot enjoy without excess. But to be strong enough both to bear the one and to be sober in the other is the mark of a man who has a perfect and invincible soul.
Marcus AureliusLet thy chief fort and place of defense be a mind free from passions. A stronger place and better fortified than this, hath no man.
Marcus AureliusIn the same degree in which a man's mind is nearer to freedom from all passion, in the same degree also is it nearer to strength.
Marcus Aurelius