"Intelligent design, as I understand it, means that you have an intelligent designer somewhere. And the problem with that is, if you’re going to invoke an intelligent designer, you have to ask, 'Who de…"

"I'm not a guru. I'm just a guy who loves the universe."

"The universe is a hostile place. It will kill you if you're not careful."

"Imagine a world where people are judged not by the color of their skin, but by the content of their character, and where the content of their character is measured by how much science they know."

"The universe is not a toy. It's a laboratory."