"So long as the universe had a beginning, we could suppose it had a creator. But if the universe is really completely self-contained, having no boundary or edge, it would have neither beginning nor end: it would simply be. What place, then, for a creator?"
"One, remember to look up at the stars and not down at your feet. Two, never give up work. Work gives you meaning and purpose and life is empty without it. Three, if you are lucky enough to find love, remember it is there and don't throw it away."
"why are we here?where do we come from?traditionally,these are questionsfor philosophy,but philosophy is dead"
"There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win because it works."
"I have noticed that even those who assert that everything is predestined and that we can change nothing about it still look both ways before they cross the street"
"I hope I have helped to raise the profile of science and to show that physics is not a mystery but can be understood by ordinary people."