In the gymnastic exercises suppose that a man has torn thee with his nails, and by dashing against thy head has inflicted a wound. Well, we neither show any signs of vexation, nor are we offended, nor do we suspect him afterwards as a treacherous fellow; and yet we are on our guard against him, not however as an enemy, nor yet with suspicion, but we quietly get out of his way. Something like this let thy behaviour be in all the other parts of life; let us overlook many things in those who are like antagonists in the gymnasium. For it is in our power, as I said, to get out of the way, and to have no suspicion nor hatred.
In everything which happens keep before thy eyes those to whom the same things happened, and how they were vexed, and treated them as strange things, and found fault with them: and now where are they? Nowhere. Why then dost thou too choose to act in the same way? And why dost thou not leave these agitations which are foreign to nature, to those who cause them and those who are moved by them? And why art thou not altogether intent upon the right way of making use of the things which happen to thee? For then thou wilt use them well, and they will be a material for thee to work on. Only attend to thyself, and resolve to be a good man in every act which thou doest: and remember...