The boy who is going to make a great man must not make up his mind merely to overcome a thousand obstacles, but to win in spite of a thousand repulses and defeats.

Where the spirit does not work with the hand, there is no art.

Before I was born, my father told my mother, 'If it's a boy, he's going to be a scientist.'

Life always kills you in the end, but first it prevents you from getting what you want.

One cannot imagine St. Francis of Assisi talking about rights.