Because you’re such a good salesman, and if you go work for a company, they’re going to use you as a salesman. If you’re going to be a salesman, you might as well be selling something worthwhile, like education

You will not find your passion in things and you will not find your passion in money. The more things and the more money you have, the more you will look around and use that as the metric and there will be someone with more.

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.

Time is all you have and you may find one day that you have less than you think.

Read at least one book a month. This is self-serving, obviously. It's a proven fact that people who read buy more books than people who don't read. In truth, I wish you'd read ten books a month, or at least buy that many.

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

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