One should not pursue goals that are easily achieved. One must develop an instinct for what one can just barely achieve through one’s greatest efforts.

There are few enough people with sufficient independence to see the weaknesses and follies of their contemporaries and remain themselves untouched by them.

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

What can the schools do to defend democracy? Should they preach a specific political doctrine? I believe they should not. If they are able to teach young people to have a critical mind and a socially oriented attitude, they will have done all that is necessary.

The armament industry is indeed one of the greatest dangers that beset mankind. It is the hidden evil power.

To the Master's honor all must turn, each in its track, without a sound, forever tracing Newton's ground.

The only thing that interferes with my learning is my education.