If you believe that all men are created equal, then a child's death in some other country is no less tragic than in the United States.

In the U.S., we believe the best way to improve lives is to improve public education.

India is more of an aid recipient than a provider of aid.

Intellectual property has the shelf life of a banana.

The part of uranium that's fissile - when you hit it with a neutron, it splits in two - is about 0.7%. The reactors we have today are burning that 0.7%.

The general idea of the rich helping the poor, I think, is important. That your sense of justice says, why should rich kids - who barely get these diseases and almost never die of them - why should they get the vaccines, when poor kids, who actually do die from these diseases, don't get those things? It's an unbelievable inequity that there isn't that access.

The machines need to get faster. They need to get cheaper.