"Everything in the world began with a yes. One molecule said yes to another molecule and life was born. But before prehistory there was the prehistory of prehistory and there was the never and there was the yes. It was ever so. I do not know why, but I do know that the universe never began. Let no one be mistaken. I only achieve simplicity with enormous effort. So long as I have questions to which there are no answers, I shall go on writing..."