At feasts, remember that you are entertaining two guests, body and soul. What you give to the body, you presently lose; what you give to the soul, yo… - Epictetus

If you decide to do something, don't shrink from being seen doing it, even if the majority of people disapprove. If you're wrong to do it, then you should shrink from doing it altogether; but if you're right, then why worry how people will judge you?

Although life is a matter of indifference, the use which you make of it is not a matter of indifference.

Well, then, biting, kicking, wanton imprisonment and beheading – is that what our nature entails? No; rather, acts of kindness, cooperation and good will. And so, whether you like it or not, a person fares poorly whenever he acts like an insensitive brute.