You know, being an entrepreneur is super hard work, and if you're not passionate about what you're doing, you're probably not going to succeed.

There's a lot of good that's done for society in building businesses, but it's also great to be involved in those things where you can be connected to the community, to the world, and think about how you can use what you're creating, both in terms of your personal skills as well as your products or services to do good things for others.

I'm a person who enjoys the hands-on experience of anything I do. Get your hands dirty - that's the thing that drives and motivates me.

In business, the market gives you feedback in real time. Your sales figures tell you what's working, what isn't, and how you need to change. If you don't listen to the feedback, you go belly up. In philanthropy, there is no market.

In business, there's a constant focus on developing strategies, reviewing executive performance against those strategies each year, engaging with opposing or different points of view, and having intellectual dialogue.

You know, being an entrepreneur is super hard work, and if you're not passionate about what you're doing, you're probably not going to succeed.

At Microsoft, the magic of software is used to take on very interesting challenges.