The discovery of nuclear reactions need not bring about the destruction of mankind any more than the discovery of matches.

The world is in greater peril from those who tolerate or encourage evil than from those who actually commit it.

Raffiniert ist der Herr Gott, aber boshaft ist er nicht. God is subtle, but he is not malicious.

Common sense consists of those layers of prejudice laid down before the age of 18.

The Jewish scriptures admirably illustrate the development from the religion of fear to moral religion, a development continued in the New Testament. The religions of all civilized peoples, especially the peoples of the Orient, are primarily moral religions.

Everybody should be ashamed who uses the wonders of science and engineering without thinking and having mentally realized not more of it than a cow realizes of the botany of the plants which it eats with pleasure.

Do not grow old, no matter how long you live.