Relativity teaches us the connection between the different descriptions of one and the same reality.

We scientists, whose tragic destination has been to help in making the methods of annihilation more gruesome and more effective, must consider it our solemn and transcendent duty to do all in our power in preventing these weapons from being used for the brutal purpose for which they were invented.

What is essential in the life of a man of my kind is what he thinks and how he thinks, and not what he does or suffers.

We can't solve today's problems with the mentality that created them.

It is a very high goal which, with our weak powers, we can reach only very inadequately, but which gives a sure foundation to our aspirations and valuations.

As long as there are sovereign nations possessing great power, war is inevitable.

I know little about nature and hardly anything about men.