Your patience will be both appreciated and rewarded

Find the best in everybody, no matter how long you have to wait for them to show it

if you offer wisdom from a third party, it seems less arrogant and more acceptable.

The brick walls are there to stop the people who don't want it badly enough. They are there to stop the other people!

To be cliché, death is a part of life and it's going to happen to all of us. I have the blessing of getting a little bit of advance notice and I am able to optimize my use of time down the home stretch.

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

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.