It is the act of a madman to pursue impossibilities .
This is the chief thing: be not perturbed, for all things are according to the nature of the universal.
A rational nature admits of nothing but what is serviceable to the rest of mankind.
He who follows reason in all things is both tranquil and active at the same time, and also cheerful and collected.
The best sort of revenue is not to be like him who did the injury.
You are a little soul bearing about a corpse, as Epictetus used to say.