The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.
Combinatory play seems to be the essential feature in productive thought.
It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure.
Education is a series of prejudices acquired by the age of eighteen.
Of what is significant in one's own existence one is hardly aware, and it certainly should not bother the other fellow. What does a fish know about the water in which he swims all his life?
The individual must not merely wait and criticize, he must defend the cause the best he can. The fate of the world will be such as the world deserves.
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
It is my conviction that killing under the cloak of war is nothing but an act of murder.
Learn from yesterday, live for today, hope for tomorrow.