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

"Science is not just a collection of facts, but a way of thinking."

"The universe is expanding. We are all expanding. Everything is expanding. What are you doing?"

"My biggest problem with flat-Earthers is that they're not asking good questions. They're starting with the answer and working backward."

"I'm often asked if I believe in UFOs. I'm like, 'Yeah, I do. I believe in Unidentified Flying Objects.' It's just that I don't believe they're aliens."