How to gain, how to keep, how to recover happiness is in fact for most men at all times the secret motive of all they do, and of all they are willing to endure.

Since you make evil or good by your own thoughts, it is your ruling of your thoughts which proves to be your principal concern.

A winner's attitude: it may be difficult, but it's possible. A loser's attitude: It may be possible, but it's too difficult.

There is but one unconditional commandment ... to bring about the very largest total universe of good which we can see.

Act as if what you do makes a difference. It does.

No reception without reaction, no impression without correlative expression, -this is the great maxim which the teacher ought never to forget.

This life is worth living, we can say, since it is what we make it.