Part of me thinks that I've been called by the universe, to get all sort of spiritual about it. Like, I've had no actual say in the matter. The universe found me.

Claiming there is no other life in the universe is like scooping up some water, looking at the cup and claiming there are no whales in the ocean.

I never got into 'Star Wars.' Maybe because they made no attempt to portray real physics. At all.

Kids are never the problem. They are born scientists. The problem is always the adults. They beat the curiosity out of kids. They outnumber kids. They vote. They wield resources. That's why my public focus is primarily adults.

95, 96 percent of all that drives the universe has no known origin.

Space enthusiasts are the most susceptible demographic to delusion that I have ever seen.

Too many people view on [space exploration] as a luxury rather than as a fundamental driver to stimulate interest in science to everyone in the educational pipeline. It's vital to our prosperity and security.