That I read a lot. Bookshelves in every room, all stuffed. That I'm interested in many different things: history, anthropology, neurology & cognitive science, education, natural history (shelves of field guides), ecology, wildlife management, horses, child development. That I read a lot of genre fiction and nongenre fiction, though the fiction accounts for less than half the total. That I re-read books, and buy a lot of used books as well as new ones. That at one time I studied Latin and classical Greek, and at least dabbled in French and German (judging by the dictionaries.) Because it's obvious that I buy used books, the wear on the books is not always evidence of how often I re-read them. However, the dust on top of some shows I haven't re-read them in awhile.
And that there are not enough bookshelves in this house.