Be not afraid of life. Believe that life is worth living, and your belief will help create the fact.

The history of philosophy is to a great extent that of a certain clash of human temperaments.

To study the abnormal is the best way of understanding the normal.

Whenever you're in conflict with someone, there is one factor that can make the difference between damaging your relationship and deepening it. That factor is attitude.

The increase of scientific knowledge lies not only in the occasional milestones of science, but in the efforts of the very large body of men who with love and devotion observe and study nature.

You study, you learn, but you guard the original naivete. It has to be within you, as desire for drink is within the drunkard or love is within the lover.

I love talking about women because they are a constant study and you're always learning.

I've stopped reading about my books on the Internet because it's too hurtful.