You need somebody to support the retirees. You need to pay into the pension plans. You need people to work at the hospitals, at the nursing homes.

Half of Americans look at the other half and say, they're too lazy or they're not willing to get up and go to school. And the other half looks and sees a bunch of fat cats and talks about income inequality.

If you have waves of immigration, you better figure out a way to turn those immigrants into red-blooded Americans, or else you end up splintering the society.

You know, throughout the world, throughout history, when countries get rich, they stop having kids.

The best way to achieve self-esteem is to do something worthy of esteem.

... in the future a typical factory will host three workers: a man, a computer and a dog. The computer will do all the work. The man will feed the dog. And the dog's job? To bite the man - if he touches the computer.

Rich countries don't need as many children. We used to need kids to work in the fields as farm hands, to crawl on their bellies into coal mines. Well, kids are more like luxury objects now.