Freedom is the only worthy goal in life. It is won by disregarding things that lie beyond our control. Stop aspiring to be anyone other than your own best self: for that does fall within your control.

Any person capable of angering you becomes your master.

Don't just say you have read books. Show that through them you have learned to think better, to be a more discriminating and reflective person. Books are the training weights of the mind. They are very helpful, but it would be a bad mistake to suppose that one has made progress simply by having internalized their contents." Translation by Sharon Lebell

If you want to improve, be content to be thought foolish and stupid with regard to external things. Don't wish to be thought to know anything; and even if you appear to be somebody important to others, distrust yourself. For, it is difficult to both keep your faculty of choice in a state conformable to nature, and at the same time acquire external things. But while you are careful about the one, you must of necessity neglect the other

It's not what happens to you, but how you react to it that matters.

Either God wants to abolish evil, and cannot; or he can, but does not want to.

Not things, but opinions about things, trouble men.