Bibliophilia   They meant wealth, once, the leather-rank library where shelves rose to the high ceiling, and a ladder wheeled to access the highest rows. A love of learning, or perhaps an investment, or only a mark of class, pages of many volumes not even cut.   Even now they might be a brand declaring your tribe, as when a classmate asked my son, Why does your house have so many books? Or my visitor, who gazed around our living room and bluntly demanded, Where are your books? Feeling accused, I led her to our studies where crammed bookshelves…