When you have a fortune that is almost hard to imagine, the best thing is not to pass that on to one's children. That distorts their life situation.

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%.

I have been struck again and again by how important measurement is to improving the human condition.

Other paths would include making nuclear fission cheap enough and safe enough that people broadly embrace it, so that could be scaled up.

[AIDS ] is not a short-term emergency but it is something that, just like smallpox was many decades ago, we should aim for complete eradication.

Most of our competitors were one-product wonders... They would do their one product, but never get their engineering sorted out.

Every company can choose whether to lead or follow the emerging digital trends.