Fundamentals, fundamentals, fundamentals. You’ve got to get the fundamentals down because otherwise the fancy stuff isn’t going to work.

Advice is very easy to give, and even easier not to follow, so I don't fool with it.

We cannot change the cards we are dealt, just how we play the hand. If I don’t seem as depressed or morose as I should be, sorry to disappoint you.

Never make a decision until you have to.

What is the most appropriate thing to say to a friend who was about to die. He answered:”tell your friend that in his death, a part of you dies and goes with him. Whenever he goes, you also g. He will not be alone".

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.

If I work hard enough, there will be things I can do tomorrow that I can't do today.