"We are all connected. To each other, biologically. To the Earth, chemically. To the rest of the universe, atomically."

"If you're not failing, you're not pushing your limits, and if you're not pushing your limits, you're not maximizing your potential."

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

"I think it's important to have a sense of humor about the universe. It's a pretty absurd place, after all."

"If you are scientifically literate, the world looks very different to you, and that understanding empowers you."