"If you're religious, and you have some sort of revelation that makes you think something is true, that's not science. That's belief."

"The only people who still call it 'global warming' are the ones who don't believe in it."

"If you want to assert a truth, first make sure it's not just an opinion that you desperately want to be true."

"The universe is not a machine. It's a dance."

"The universe is a vast and lonely place. But it's also beautiful."