Newton did not know what happened to the apple, and I can prove this when the next eclipse comes.

Berlin is the place to which I am most closely bound by human and scientific ties.

A knowledge of the existence of something we cannot penetrate, of the manifestations of the profoundest reason and the most radiant beauty - it is this knowledge and this emotion that constitute the truly religious attitude; in this sense, and in this alone, I am a deeply religious man.

Genius is 1% talent and 99% percent hard work.

It is strange to be known so universally and yet to be so lonely.

People start their lives at last when they are able to live for something other than themselves.

On the other hand, although I have a regular work schedule, I take time to go for long walks on the beach so that I can listen to what is going on inside my head. If my work isn't going well, I lie down in the middle of a workday and gaze at the ceiling while I listen and visualize what goes on in my imagination.