"If you are honest, you will find that you are often wrong. But if you are not honest, you will never find out."

"The origin of life is a scientific problem."

"It is not so much what one does, as what one is, that matters."

"It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change."

"I'm not a philosopher, I'm a scientist."