The dignity of man is vindicated as much by the thinker and poet as by the statesman and soldier.

I venture to define science as a series of interconnected concepts and conceptual schemes arising from experiment and observation and fruitful of further experiments and observations. The test of a scientific theory is, I suggest, its fruitfulness.

Whether a man lives or dies in vain can be measured only by the way he faces his own problems, by the success or failure of the inner conflict within his own soul. And of this no one may know save God.

He who enters a university walks on hallowed ground.

Each honest calling, each walk of life, has its own elite, its own aristocracy based on excellence.

Even the development of the steam engine owed but little to the advancement of science.

There is only one proved method of assisting the advancement of pure science-that of picking men of genius, backing them heavily, and leaving them to direct themselves.