[ Bernie Sanders' popularity] is exactly the same as Donald Trump's.It is a bunch of people who are disaffected with what the establishment has done, and they are striking out. Do they have any clear idea of what they want as an alternative? No. The candidates that they have surrounded themselves with either have no idea or are promising things that are so impractical they will never get done.

This society cannot go forward, the way we have been going forward, where the gap between the rich and the poor keeps growing. It's not politically viable; it's not morally right; it's just not going to happen.

If you think of all the publicity about the terrible tragedy of Virginia Tech, we have a Virginia Tech in this country every day. It's just spread across 50 states.

You can't sit there and worry about everything.

By speeding the transition to cleaner energy, we can improve the lives of billions of people, while also reducing the risks we face from a changing climate.

America is built around this premise that you can do it, and there are an awful lot of people who are unlikely to have done it who did.

Being an entrepreneur isn't really about starting a business. It's a way of looking at the world: seeing opportunity where others see obstacles, taking risks when others take refuge.