Life comes only from life.

Change only favours minds that are diligently looking and preparing for discovery.

Whether our efforts are, or not, favored by life, let us be able to say, when we come near to the great goal, I have done what I could.

Do not promote what you can't explain, simplify, and prove early.

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.

The universe is asymmetric.

Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.