Once you know who you are and to whom you are linked, you will know what to do

When a man is proud because he can understand and explain the writings of Chrysippus, say to yourself, 'if Chrysippus had not written obscurely, this man would have had nothing to be proud of.'

The origin of sorrow is this: to wish for something that does not come to pass.

Remember that you are an actor in a play, and that the Playwright chooses the manner of it: If he wants you to act a poor man you must act the part with all your powers; and so if your part be a cripple or a magistrate or a plain man. For your business is to act the character that is given you and act it well. The choice of the cast is Another's.

Wish that everything should come about just as it does.

In a word, neither death, nor exile, nor pain, nor anything of this kind is the real cause of our doing or not doing any action, but our inward opinions and principles.

Desire and happiness cannot live together.