“Steep curving stone stairs led to a square library on the floor above. The 4,000 books in the library were mostly collected between 1710 and 1730. ... For a moment I was tempted to ask to be locked in. If I could skim ten books a day for a year, I would be able to get a sense of most of what David Hume might have read in 1730 -- an age when it still might just have been possible to read everything.”