"I don't have a problem with people believing in God. I have a problem with people who believe in God and use that as an excuse to be ignorant."

"I often think about how small we are in the grand scheme of things, and it makes me feel both humbled and empowered."

"Earth is a small planet, and we are not alone. We are not alone in the universe, and we are not alone on this planet."

"Kids are born scientists. They're born with a sense of wonder and a desire to explore."

"If you want to understand the universe, you have to be willing to ask the tough questions."