You don't go to other books and take little pieces because although say a romantic scene may have been many times before all the details of who it is, where it is, are so intertwined in that text that it's easier to write it from scratch.

If GM had kept up with technology like the computer industry has, we would all be driving $25 cars that got 1,000 MPG.

In the next 15 years, we can halve childhood deaths. That's doable.

I was lucky to be in the right place at the right time. But many others were also in the same place. The difference was that I took action.

Students deserve great teachers. And teachers deserve the support they need to become great.

The most amazing philanthropists are people who are actually making a significant sacrifice.

If we have optimism without empathy then it doesn't matter how much we master the secrets of science. We're not really solving problems, we're just working on puzzles.