In matters of truth and justice, there is no difference between large and small problems, for issues concerning the treatment of people are all the same.

The most beautiful emotion we can experience is the mystical. It is the power of all true art and science. He to whom this emotion is a stranger, who can no longer wonder and stand rapt in awe, is as good as dead. To know that what is impenetrable to us really exists, manifesting itself as the highest wisdom and the most radiant beauty, which our dull faculties can comprehend only in their most primitive forms - this knowledge, this feeling, is at the center of true religiousness. In this sense, and in this sense only, I belong to the rank of devoutly religious men.

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

What you can't imagine, you can't discover.

Relativity is a purely scientific matter and has nothing to do with religion.

We all try to escape pain and death, while we seek what is pleasant.

Not all things worth counting are countable and not all things that count are worth counting.