"The greatest discovery is to find something you love to do and then figure out how to get paid for it."

"We spend the first year of a child's life teaching it to walk and talk and the rest of its life to shut up and sit down."

"We are part of this universe; we are in this universe, but perhaps more important than both of those facts is that the universe is in us."

"I'm not saying I'm a god. I'm just saying I have a really good telescope."

"I don't think there's any such thing as a 'dumb question' when it comes to science. There are just questions that reveal a lack of information."