Christina Romer

Where we're coming down is we currently have $787 billion of stimulus that's been passed. We're certainly focusing on spending that money as quickly and as efficiently and as transparently as we can. We think that's absolutely the right strategy.

The basic idea that if you increase government spending or you cut people's taxes that stimulates the economy and lowers the unemployment rate, is a very widely accepted idea. It's in every economics textbook, that's what we teach our undergraduates, and I certainly try to teach them the truth.

The most effective way to shake an economy out of a terrible downturn when we're at the zero lower bound is an aggressive change in policy that makes people wake up, say 'this is a new day' and change their expectations.

Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.

My venture investing career has three phases, all roughly 6-8 years long. The first, at Euclid, was software to Internet. The second, at Flatiron, was Internet to bubble. And the third, at USV, has been web 2 to mobile. I have always used a new firm to denote a new investment phase for me. Throw away the old. Start with the new.