If there is a God, he's a great mathematician.

I do not see how a man can work on the frontiers of physics and write poetry at the same time. They are in opposition.

The shortage of buyers, which the world is suffering from, is readily understood, not as due to people not wishing to obtain possession of goods, but as people being unwilling to part with something which might earn a regular income in exchange for those goods.

Scientific progress is measured in units of courage, not intelligence.

One could perhaps describe the situation by saying that God is a mathematician of a very high order, and He used very advanced mathematics in constructing the universe.

The methods of theoretical physics should be applicable to all those branches of thought in which the essential features are expressible with numbers.

The research worker, in his efforts to express the fundamental laws of Nature in mathematical form, should strive mainly for mathematical beauty. He should take simplicity into consideration in a subordinate way to beauty ... It often happens that the requirements of simplicity and beauty are the same, but where they clash, the latter must take precedence.