Neil deGrasse Tyson — "I'm often asked whether I believe in God. I'm an agnostic."

"If you want to know what it means to be alive, look at the stars."

"I'm not a fan of the term 'global warming.' I prefer 'global weirding,' because it's not just about things getting warmer, it's about things getting stranger."

"I often wonder if there are aliens out there who are watching us, and they're just shaking their heads, like, 'Look at these primitive beings, still fighting over land and resources.'"

"The most important thing about the scientific method is that it's self-correcting. You don't have to trust anyone. You can verify everything for yourself."

"The universe is not just a collection of facts. It's a story."