Never make a decision until you have to.

It's easy to be smart when you are parodying smart people.

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.

The questions are always more important than the answers.

I don't suffer from an abundance of politeness.

Put on your own oxygen mask before assisting others.

Remember how quickly our field [computer science] changes. That's why you want to focus on learning things that don't change: how to work well with other people, how to carefully assess a client's real - as opposed to perceived - needs, and things like that.