A rational nature admits of nothing but what is serviceable to the rest of mankind.

Wilt thou, then, my soul, never be good and simple and one and naked, more manifest than the body which surrounds thee?

The happiness and unhappiness of the rational, social animal depends not on what he feels but on what he does; just as his virtue and vice consist not in feeling but in doing.

Never esteem anything as of advantage to you that will make you break your word or lose your self-respect.

Limit time to the present. Meditate upon your last hour.

It doesn't hurt me unless I interpret its happening as harmful to me. I can choose not to.

Things can never touch the soul, but stand inert outside it, so that disquiet can arise only from fancies within.