Never, ever underestimate the importance of having 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.

I've always admired people who are over-prepared.

Anything is possible, and that’s something we should not lose sight of. The inspiration and the permission to dream is huge.

Most people who have told a lie think they got away with it … when in fact, they didn’t

Believe nothing a man tells you and everything he shows you"....(Taken from a farewell video from a dying father to his infant daughter on dating)

Proper apologies have three parts: 1) What I did was wrong. 2) I feel badly that I hurt you. 3) How do I make this better?