Necessity, who is the mother of invention.

Nothing worth doing is completed in our lifetime; therefore, we must be saved by hope.

Good music is good music, and everything else can go to hell.

Any man who afflicts the human race with ideas must be prepared to see them misunderstood.

A man who is afraid of death will be afraid of life also, because life brings death. If you are afraid of the enemy and you close your door, the friend will also be prohibited.

If people become ecstatic the whole society will have to change, because this society is based on misery. If people are blissful you cannot lead them to war -- to Vietnam, or to Egypt, or to Israel. No. Someone who is blissful will just laugh and say: This is nonsense!

I think most of us would be horrified to meet ourselves and discover what everyone else already knows about us.

The only lasting beauty is the beauty of the heart.

Mathematics is the language with which God has written the universe.

If you are idle, be not solitary. If you are solitary, be not idle.