Microsoft has had many, many successful products. I'm committed to one company. This is the industry I've decided to work in.

AIDS we're - most of these diseases - we are down from the peak. We're down about 40 per cent from the peak and if we got the right vaccines, which are at the early stage of discovering, then the numbers would come down very dramatically. So that's why we talk about it as an emergency.

The quality of research in the U.S. is absolutely the best.

I want to make clear that we respect the role of government in our legal andeconomic system.

The idea of explaining why free trade is good, why immigration is good, why the world is so connected, that we need to think in terms of humanity and being generous to each other, you know, that's proving to be a challenge.

At Microsoft there are lots of brilliant ideas but the image is that they all come from the top - I'm afraid that's not quite right.

A breakthrough in machine learning would be worth ten Microsofts.