If we make an exception in this case, it would set a precedent and we would have pubs up and down the country demanding the right to be able to serve their drinks in half-litres and litres.

BBC: 'Metric' bar told to serve pints

And that we may be on an up cycle right now, but that things will slow down again, as they have over and over for millennium.

FORBES: Thoughts On The Changing World Around Us

His term expires in January, so there's going to be lots of talk about his legacy and whether he made the right calls when the economy was going up or down.

NPR: The Marketplace Report: Greenspan's Successor