A scientist is as weak and human as any man, but the pursuit of science may ennoble him even against his will.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

Nonsense! The most hopelessly stupid man is he who is not aware that he is wise.

I'm not a speed reader. I'm a speed understander.

The human mind works at low efficiency. Twenty percent is the figure usually given. When, momentarily, there is a flash of greater power, it is termed a hunch, or insight, or intuition.

Experimentation is the least arrogant method of gaining knowledge. The experimenter humbly asks a question of nature.

To me it seems to be important to believe people to be good even if they tend to be bad, because your own joy and happiness in life is increased that way, and the pleasures of the belief outweigh the occasional disappointments. To be a cynic about people works just the other way around and makes you incapable about enjoying the good things.