The only race I know is the human one.

The Constitution only guarantees the American people the right to pursue happiness. You have to catch it yourself. A table, a chair, a bowl of fruit and a violin; what else does a man need to be happy?

I appeal to all men and women, whether they be eminent or humble, to declare that they will refuse to give any further assistance to war or the preparation of war.

Knowledge is limited.

God is a scientist, not a magician.

There are actually two approaches to reside your daily life. One is as if absolutely nothing is really a miracle. The other is as if every little thing is a wonder

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.