"The more rockets we launch, the more likely it is that we'll have a self-sustaining civilization on Mars."

"Pedo guy."

"I think we're at the dawn of a new age of space exploration."

"I think it's important to have a good sense of purpose. You need to know why you're doing what you're doing."

"I hope you don’t think I’m trying to be manipulative. I’m not. I’m just trying to make sure that humanity has a future."