I'm a big believer that as much as possible, and there's obviously political limitations, freedom of migration is a good thing.

Good developers like seeing their products sell in large quantities. They enjoy the competition of doing a better job than the other company, especially if the other company has more people on the project and they're entrenched and people are saying that we don't have a chance of getting in there and... and doing well.

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

I have a nice office. I have a nice house... So I'm not denying myself some great things. I just don't happen to have expensive hobbies.

Oh, I think there are a lot of people who would be buying and selling online today that go up there and they get the information, but then when it comes time to type in their credit card they think twice because they're not sure about how that might get out and what that might mean for them.

A lot of people assume that creating software is purely a solitary activity where you sit in an office with the door closed all day and write lots of code.

We [US] are the biggest per person, by a substantial amount, greenhouse emitters, and we give the most foreign aid, not per person but in absolute. This is another issue where hopefully we will take a long-term approach which, even though we sometimes have a hard time doing that, it's easier for us, as a rich country with this kind of scientific depth, than it is for the poor countries who will suffer the problems.