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.

Through the release of atomic energy, our generation has brought into the world the most revolutionary force since prehistoric man's discovery of fire. This basic force of the universe cannot be fitted into the outmoded concept of narrow nationalisms.

Experience is knowledge. All the rest is information.

The mere formulation of a problem is far more essential than its solution, which may be merely a matter of mathematical or experimental skills. To raise new questions, new possibilities, to regard old problems from a new angle requires creative imagination and marks real advances in science.

The time comes in life when we have read enough. It's time to stop reading. It's time to lay down the books and write.

Without "ethical culture", there is no salvation for humanity.

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.