It is also a natural thing for a serious young man that he should form for himself as precise an idea as possible of the goal of his desires.

I didn't arrive at my understanding of the fundamental laws of the universe through my rational mind.

The creative principle [of science] resides in mathematics.

If you want the answer to anything, go sit in Nature for awhile

During the last century, and part of the one before, it was widely held that there was an unreconcilable conflict between knowledge and belief.

A man's ethical behaviour should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.

You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat.