A life directed chiefly toward the fulfillment of personal desires will sooner or later always lead to bitter disappointment.
It is easier to denature plutonium than to denature the evil spirit of man.
Look to the stars and from them learn.
When you change the way you look at things, the things you look at change.
Certain it is that a conviction, akin to religious feeling, of the rationality or intelligibility of the world lies behind all scientific work of a higher order.... This firm belief, a belief bound up with deep feeling, in a superior mind that reveals itself in the world of experience, represents my conception of God.
If I were to remain silent, I'd be guilty of complicity.