Go straight to the seat of intelligence. - Marcus Aurelius

The other reason is that what happens to the individual is a cause of well-being in what directs the world--of its well-being, its fulfillment, or its very existence, even. Because the whole is damaged if you cut away anything--anything at all--from its continuity and its coherence. Not only its parts, but its purposes. And that's what you're doing when you complain: hacking and destroying. (Hays translation)

In the case of all things which have a certain constitution, whatever harm may happen to any of them, that which is affected becomes consequently worse; but in like case, a man becomes both better... and more worthy of praise, by making the right use of these accidents.

Why then dost thou 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 things which happen to thee? for then thou wilt use them well, and they will be material for thee. Only attend to thyself, and resolve to be a good man in every act which thou doest; and remember...