Reason is not measured by size or height, but by principle.

The cause of all human evils is the not being able to apply general principles to special cases.

I am always content with what happens; for I know that what God chooses is better than what I choose.

Learn to distinguish what you can and can't control. Within our control are our own opinions, aspirations, desires and the things that repel us. They are directly subject to our influence.

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.

When we blather about trivial things, we ourselves become trivial, for our attention gets taken up with trivialities. You become what you give your attention to.

These reasonings are unconnected: "I am richer than you, therefore I am better"; "I am more eloquent than you, therefore I am better." The connection is rather this: "I am richer than you, therefore my property is greater than yours;" "I am more eloquent than you, therefore my style is better than yours." But you, after all, are neither property nor style.