[Warren Buffett ] met with all sorts of different groups about a lot of different things, but yes, he took the time, he listened and he wanted to understand about some of the different diseases and the strength of the American role in doing all these things.

Typically, your corporate e-mail account is not, today, that spam-targeted. It's more the free e-mail accounts that are spam-targeted.

I don't like typing messages on my phone. Some people get used to it.

We're creating this alliance, GAVI, that has helped buy the vaccines that were in the rich world but not getting to the poor kids, getting a very cheap price and figuring out the cold chain, getting the delivery right, and then funding research for new vaccines. A lot of them are coming along. We've got a meningitis vaccine out, got that through large parts of Africa. That has been a huge success.

Almost every way we make electricity today, except for the emerging renewables and nuclear, puts out CO2. And so, what we're going to have to do at a global scale, is create a new system. And so, we need energy miracles.

The U.S. immigration laws are bad - really, really bad. I'd say treatment of immigrants is one of the greatest injustices done in our government's name.

Success is a lousy teacher. It makes you think you know what you're doing.