It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.

Science is the great antidote to the poison of enthusiasm and superstition.

The fewer the facts, the stronger the opinion.

What is a scientist after all? It is a curious man looking through a keyhole, the keyhole of nature, trying to know what's going on.

Science is organized common sense where many a beautiful theory was killed by an ugly fact.