The greatest scientists are artists as well.

Whatever your problems in math are, I assure mine are greater.

Only morality in our actions can give beauty and dignity to life.

An oligarchy of private capital cannot be effectively checked even by a democratically organized political society because under existing conditions, private capitalists inevitably control, directly or indirectly, the main sources of information.

Germany had the misfortune of becoming poisoned, first because of plenty, and then because of want.

Where there is love, there is no imposition.

I don't try to imagine a personal God; it suffices to stand in awe at the structure of the world, insofar as it allows our inadequate senses to appreciate it.