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

One should guard against preaching to young people success in the customary form as the main aim in life. The most important motive for work in school and in life is pleasure in work, pleasure in its result, and the knowledge of the value of the result to the community.

Experts are just trained dogs.

It is our American habit if we find the foundations of our educational structure unsatisfactory to add another story or wing.

Don't be too hard on me. Everyone has to sacrifice at the altar of stupidity from time to time.

Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.

The individual must not merely wait and criticize, he must defend the cause the best he can. The fate of the world will be such as the world deserves.