Take our 20 best people away, and I will tell you that Microsoft will become an unimportant company

Anything you do, you better enjoy it for its value. Because people are going to second-guess everything you do.

As I look forward, I'm very optimistic about the things I see ahead.

The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.

Getting ready for a global pandemic is every bit as important as nuclear deterrence and avoiding a climate catastrophe.

I think Ebola is a great example of where the world really needs to come together. The three countries where this outbreak took place have had a lot of civil war, very weak health systems. And so, it did take a while for people to understand ....that eventually what we saw was a very unique Ebola epidemic. I think it is quite impressive what's being pulled together, and I think we will be able to get this under control.

The next time someone tells you we can trim the budget by cutting aid, I hope you will ask whether it will come at the cost of more people dying.