“'There’s a boundary line: on one side are those who make books, on the other those who read them. I want to remain one of those who read them, so I take care always to remain on my side of the line. Otherwise, the unsullied pleasure of reading ends, or at least is transformed into something else, which is not what I want. This boundary line is tentative, it tends to get erased: the world of those who deal with books professionally is more and more crowded and tends to become one with the...