"I'm a fairly aggressive tweeter. I like to engage with people who disagree with me, and try to educate them."

"The universe is not just out there. It's in here."

"I'm not saying I'm smarter than anyone. I'm just saying I've read more books."

"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."

"There are no bad ideas in science, just bad experiments."