I have never yet met a healthy person who worried very much about his health, or a really good person who worried much about his own soul.

To the biologist the problem of socialism appears largely as a problem of size.

This is my prediction for the future: Whatever hasn't happened will happen, and no one will be safe from it.

We must learn not to take traditional morals too seriously. And it is just because even the least dogmatic of religions tends to associate itself with some kind of unalterable moral tradition, that there can be no truce between science and religion.

Einstein - the greatest Jew since Jesus. I have no doubt that Einstein's name will still be remembered and revered when Lloyd George, Foch and William Hohenzollern share with Charlie Chaplin that ineluctable oblivion which awaits the uncreative mind.

A fairly bright boy is far more intelligent and far better company than the average adult.

The world shall perish not for lack of wonders, but for lack of wonder