The belief that the world is getting worse, that we can't solve extreme poverty and disease, isn't just mistaken. It is harmful.

It is hard to smash a computer when you're laughing.

Depending on how quickly you get ocean rise, you have people who live in river deltas [at risk].

The 'Billionaire' song is what my kids tease me with. They sing it to me. It's funny.

You need to understand things in order to invent beyond them.

Your most unhappy customers are your greatest source of learning.

I have $100 billion... You realize I could spend $3 million a day, every day, for the next 100 years? And that's if I don't make another dime.