"No offense to anyone, but if you're an adult and you're still believing in Santa Claus, I'm concerned for you."

"For me, I am a cosmic optimist. I always think that we will find solutions to our problems."

"We spend the first year of a child's life teaching it to walk and talk and the rest of its life telling it to sit down and shut up. Is it any wonder the world is in the mess it's in?"

"The universe is a stage, and we are all actors in it."

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