True freedom is impossible without a mind made free by discipline.

The philosopher ought never to try to avoid the duty of making up his mind.

Theories of love are found in the works of scientists, philosophers, and theologians.

The best protection against propaganda of any sort is the recognition of it for what it is. Only hidden and undetected oratory is really insidious. What reaches the heart without going through the mind is likely to bounce back and put the mind out of business. Propaganda taken in that way is like a drug you do not know you are swallowing. The effect is mysterious; you do not know afterwards why you feel or think the way you do.

We love even when our love is not requited.

There is no more irritating fellow than the man who tries to settle an argument about communism, or justice, or liberty, by quoting from Webster.

... The person who, at any stage of a conversation, disagrees, should at least hope to reach agreement in the end. He should be as much prepared to have his own mind changed as seek to change the mind of another ... No one who looks upon disagreement as an occasion for teaching another should forget that it is also an occasion for being taught.