Renowned historian David McCollough on Fareed Zakaria GPS Sunday:

In the old House of Representatives chamber in the Capitol, over the doorway there is a figure of Clio, the Goddess of History. And she’s riding in her chariot and on the side of the chariot is a clock, put there way back in the 1830’s. Still runs perfectly. She’s writing in her book of history and the idea was that the representatives would look up and see what time it is but they should be reminded that’s just present-day time. What really matters is what’s being written in the book of history. What looks down on Congress today? A television camera.