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.

The contemplation of this world beckoned as a liberation (...)The road to this paradise was not as comfortable and alluring as the road to the religious paradise; but it has shown itself reliable, and I have never regretted having chosen it.

The future is not a gift-it is an achievement.

Scientific research can reduce superstition by encouraging people to think and view things in terms of cause and effect.

The strength of the Constitution lies entirely in the determination of each citizen to defend it. Only if every single citizen feels duty bound to do his share in this defense are the constitutional rights secure.

Except in mathematics, the shortest distance between point A and point B is seldom a straight line. I don't believe in mathematics.

[Ernest Rutherford is]...a second Newton.