Admit at least one painful truth to yourself every day. Teach yourself to feel that life would still be worth living even if you were not immeasurably superior to all your friends. Exercises of this sort, prolonged through several years, will at last enable you to admit facts without flinching, and will, in so doing, free you from the empire of fear over a very large field.

The essence of life is doing things for their own sakes.

It is only theory that makes men completely incautious.

A man is rational in proportion as his intelligence informs and controls his desires.

Happiness, as is evident, depends partly upon external circumstances and partly upon oneself.

One of the troubles about vanity is that it grows with what it feeds on. The more you are talked about, the more you will wish to be talked about.

Order, unity, and continuity are human inventions, just as truly as catalogues and encyclopedias.