I watched the piles of feces go up the conveyor belt... They made their way through the machine... A few minutes later I took a long taste of the end result: a glass of delicious drinking water.

Bridge is one of the last games in which the computer is not better.

A company needs to have good business reflexes, to be able to marshal its forces in a crisis or in response to any unplanned event.

Success is a lousy teacher. It seduces smart people into thinking they can't lose.

I believe in generous aid policies.

Even when things are stable, that's not easy [to work in Africa] because there are not roads, and the weather is tough, the education system hasn't been there. But this is how you get great countries, is step by step.

The most straightforward path would be if we could bring the cost of solar electric and wind down by another factor of say, three, and then have some miraculous storage solution, so that not only over the 24-hour day but over long periods of time where the wind doesn't blow, you have reliable energy. That's a path. But energy storage is hard. That's not a guaranteed path.