We all know that there are these exemplars who can take the toughest students, and they'll teach them two-and-a-half years of math in a single year.

Only through focus can you do world-class things, no matter how capable you are.

I definitely think leaving kids massive amounts of money is not a favor to them.

The billion people who wake up every day trying to figure out if they have enough food to eat won't be at Davos.

Think of business as a good game. Lots of competition and a minimum of rules. You keep score with money.

I believe innovation is the most powerful force for change in the world.

Most people overestimate what they can do in one year and underestimate what they can do in ten years.