and their order, and -- and one page, a wikipedia like page about each president, the basingbasics, myd at your disposal, just with that the spine of american history. and to some extent, the spine of modern world history. just at your disposal. and so, learn your presidents. if you don't know them. learn, one page about them. our conversation today has really been all about presidents. and you need to know them too. if you can't tell the difference between a green piece of paper with george washington on it and a green piece of paper with abe lincoln or grant, you are going to get short changed. okay. so -- we have already heard a couple of meditations, at least, about george washington that wonderful talk by david hackett fischer, gordon wood talked about his distinctiveness. we heard about john adams. of course later on david mccullough is going to be part of these proceedings and the pre-eminent scholar john adams. i asked a question about adams' son, john quincy. we've heard about thomas jefferson. we've heard from the jefferson chair at the university of virginia which is jefferso