My mom and my dad were both very sociable, meeting lots of interesting people.

Whether you believe it a moral imperative or in the rich world's enlightened self-interest, securing the conditions that will lead to a healthy, prosperous future for everyone is a goal I believe we all share.

Kenya’s M-Pesa proves that when people are empowered, they will use digital tech to innovate on their own behalf.

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

It was really phenomenal [Warren Buffett donation]. It grew out of the friendship that we had and the fact that his plan to have his wife run the foundation and give things away changed when she tragically died.

Common Core is a big win for education.

Philanthropy should be taking much bigger risks that business. If these are easy problems, business and government can come in and solve them.