The most important 'speed' issue is often not technical but cultural. It's convincing everyone that the company's survival depends on everyone moving as fast as possible.

I'm an investor in a number of biotech companies, partly because of my incredible enthusiasm for the great innovations they will bring.

The kids are a big part of my schedule.

Corruption is one of the most common reasons I hear in views that criticize aid.

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

I don't think there is any philosophy that suggests having polio is a good thing.

We win because we hire the smartest people. We improve our products based on feedback, until they're the best. We have retreats each year where we think about where the world is heading.