Experience alone can decide on truth.

Academic chairs are many, but wise and noble teachers are few; lecture-rooms are numerous and large, but the number of young people who genuinely thirst after truth and justice is small

The trite objects of human efforts-possessions, superficial success, luxury-have always seemed contemptible to me.

You believe in the God who plays dice, and I in complete law and order in a world that objectively exists, and which I, in a wildly speculative way, am trying to capture. ... Even the great initial success of the quantum theory does not make me believe in the fundamental dice-game, although I am well aware that our younger colleagues interpret this as a consequence of senility. No doubt the day will come when we will see whose instinctive attitude was the correct one.

The Bible is a great source of wisdom and consolation and should be read frequently.

The intuitive mind is a sacred gift.

I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.