I've always argued that this country has benefited immensely from the fact that we draw people from all over the world.

Since 1948 I have spent every single day thinking how the economic and political worlds have changed.

Most high-income people in our country do not realize that their incomes are being subsidized by their protection from competition from highly skilled people who are prevented from immigrating to the United States. But we need such skills in order to staff our productive economy, so that the standard of living for Americans as a whole can grow.

I don't know where the stock market is going, but I will say this, that if it continues higher, this will do more to stimulate the economy than anything we've been talking about today or anything anybody else was talking about.

Every economy exists, no matter what the level of democracy, has elements of crony capitalism. It's - given human nature and given the democratic structures, which we all, I assume, adhere to, that is an inevitable consequence.

I do not understand where the backing of Bitcoin is coming from. There is no fundamental issue of capabilities of repaying it in anything which is universally acceptable, which is either intrinsic value of the currency or the credit or trust of the individual who is issuing the money, whether it's a government or an individual.