“I'm dying and I'm having fun.”

“I'm sorry.It's my fault.How do I make it right?”

“Look, I'm going to find a way to be happy, and I'd really love to be happy with you, but if I can't be happy with you, then I'll find a way to be happy without you.”

“Another way to be prepared is to think negatively. Yes, I'm a great optimist. but, when trying to make a decision, I often think of the worst case scenario. I call it 'the eaten by wolves factor.' If I do something, what's the most terrible thing that could happen? Would I be eaten by wolves? One thing that makes it possible to be an optimist, is if you have a contingency plan for when all hell breaks loose. There are a lot of things I don't worry about, because I have a plan in place if they do.”

“It's a thrill to fulfill your own childhood dreams, but as you get older, you may find that enabling the dreams of others is even more fun.”

“I understand the arguments about how the billions of dollars spent to put men on the moon could have been used to fight poverty and hunger on Earth. But, look, I'm a scientist who sees inspiration as the ultimate tool for doing good. When you use money to fight poverty, it can be of great value, but too often, you're working at the margins. When you're putting people on the moon, you're inspiring all of us to achieve the maximum of human potential, which is how our greatest problems will eventually be solved. Give yourself permission to dream.”

“Please don't die.”