I have not met [Donald] Trump and discussed any issues with him. There have been Republican administrations like the [George] Bush administration who initiated this AIDS generosity. So it's not purely a right-left thing.

I think if you talk to the experts in any field where you have to take on a unknown challenge, where you're going to be working on it for a long time you'd find that to work themselves up to their best performance and really throw themselves into it, you know, spend all these hours in there and ah, give it their... give it their best that optimism plays a role.

Learning from mistakes and constantly improving products is a key in all successful companies.

The world is progressing and resources are becoming more abundant. I'd rather go into a grocery store today than a king's banquet a hundred years ago.

When you program, you want to think you're writing the best possible program for the... for the task you're trying to solve.

If success corrupts, I'm probably pretty corrupted by now.

Research shows that there is only half as much variation in student achievement between schools as there is among classrooms in the same school. If you want your child to get the best education possible, it is actually more important to get him assigned to a great teacher than to a great school.