The use of a growing array of derivatives and the related application of more-sophisticated approaches to measuring and managing risk are key factors underpinning the greater resilience of our largest financial institutions... Derivatives have permitted the unbundling of financial risks.

It's a bubble. It has to have intrinsic value. You have to really stretch your imagination to infer what the intrinsic value of Bitcoin is. I haven't been able to do it. Maybe somebody else can.

Without the triggers, that tax cut is irreponsible fiscal policy. Eventually, I think that will be the consensus view.

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.

These days, even out of office, I still read economic reports.

Without calling the overall national issue a bubble, it's pretty clear that it's an unsustainable underlying pattern.

Regulators have not been able to achieve the level of future clarity required to act pre-emptively. The problem is not lack of regulation but unrealistic expectations. What we confront in reality is uncertainty, some of it frighteningly so...