Luck favors the mind that is prepared.

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

Work usually follows will.

Life comes only from life.

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.

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.

... by chance you will say, but chance only favors the mind which is prepared.