It's pretty incredible to look back 30 years to when Microsoft was starting and realize how work has been transformed. We're finally getting close to what I call the digital workstyle.

The tablet is not mainstream. Reading off the screen is not mainstream.

I read a lot of obscure books and it is nice to open a book.

The poor can't wait. Philanthropists needed to carry on being generous.

I'd be happy if I could think that the role of the library was sustained and even enhanced in the age of the computer.

We have completely eradicated smallpox; we have almost eradicated polio. That's the miracle of vaccines, which is even greater than that of antibiotics.

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.