Brick walls are there for reason. And once you get over them-- even if someone has practically had to throw you over-- it can be helpful to others to tell them how you did it.

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

If you want something bad enough, never give up (and take a boost when offered).

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.

Showing gratitude is one of the simplest yet most powerful things humans can do for each other.

If nobody ever worried about what was in other people's heads, we’d all be 33 percent more effective in our lives and our jobs.

Call home at least once a week. It's a proven fact that we call home less the older we get. And that's wrong. It should be the other way around. As we get older, our parents get older.