"I don't have a favorite planet. They're all my children."

"I'm an educator. I'm a scientist. I'm a communicator. I'm not a politician."

"The universe is a beautiful place, and it's full of wonders."

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

"I'm not a vegetarian, but I do believe that we should be more mindful of where our food comes from, and how it's produced."