There won't be anything we won't say to people to try and convince them that our way is the way to go.

The people who resist change will be confronted by the growing number of people who see that better ways are available; thanks to technology.

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

I feel pretty stupid that I don't know any foreign languages. I wish I knew French or Arabic or Chinese.

Contrary to Piketty’s rentier hypothesis, I don’t see anyone on the [Forbes 400 list of the wealthiest Americans] whose ancestors bought a great parcel of land in 1780 and have been accumulating family wealth by collecting rents ever since. In America, that old money is long gone - through instability, inflation, taxes, philanthropy, and spending.

The world at large is less inequitable today than at any time in history. Number of people in abject poverty, as a percentage, is at all-time low.

In 1990, one in 10 children died before the age of five. That's now down to one in 20, and vaccines were the single biggest factor in that. Had it stayed at 10 percent, 122 million more children would have died.