"I think that the biggest challenge facing humanity is poverty. And I think that technology can be a powerful force for good in addressing that challenge."

"The world is changing at an incredible pace. And we need to be able to keep up with it."

"I'm not a demon. The point is I'm trying to make the world a better place."

"I really had a lot of dreams when I was a kid, and I think a great deal of that grew out of the fact that I had a chance to read a lot."

"The world today has 6.8 billion people... that's headed up to about 9 billion. Now if we do a really great job on new vaccines, health care, reproductive health services, we could lower that by perhap…"