I'm not a macroeconomics person.

There will be two types of businesses in the next 5 years, those that are on the Internet, and those that are out of business

I was a kind of hyper-intense person in my twenties and very impatient.

According to Ethiopian custom, parents wait to name a baby because children often die in the first weeks of life.

The barrier to change is not too little caring; it is too much complexity.

We're creating this alliance, GAVI, that has helped buy the vaccines that were in the rich world but not getting to the poor kids, getting a very cheap price and figuring out the cold chain, getting the delivery right, and then funding research for new vaccines. A lot of them are coming along. We've got a meningitis vaccine out, got that through large parts of Africa. That has been a huge success.

here are economies like China's economy where it's less than a tenth [of a percent] today, although it is growing, is quite small, because of the notion that the government takes care of everything, and Europe and China, philanthropy has not been nearly of the same scale.