If I could only give three words of advice, they would be, 'Tell the truth.' If I got three more words, I'd add: 'All the time.'

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.

There's a limit to how many times you can read how great you are and what an inspiration you are, but I'm not there yet.

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

Its important to have specific dreams. Dream Big. Dream without fear.

Not everything needs to be fixed