There is a time in every man's life when he looks to his God, when he looks at his life, when he wonders how he will be remembered.

The universe is asymmetric.

It is surmounting difficulties that makes heroes.

There is no such thing as applied science, only the application of pure science.

The more I know, the more nearly is my faith that of the Breton peasant. Could I but know all I would have the faith of a Breton peasant woman.

Never will the doctrine of spontaneous generation recover from the mortal blow struck by this simple experiment.

Since the most ancient times, all men, and particularly those who endeavored in the practice of medicine, have brought closer together two natural phenomena of capital importance: illness or fever and fermentation.