Philosophy texts in the early 1970s. Those expensive texts confirmed my feeling that books were treasures. It taught me to not mark up a book because I hated buying used books that were marked up. It taught me that books were more than paper, ink and binding, but could be portals to vast and fascinating concepts. I was on work-study in order to get through school, but the hit for books was one I took willingly. I’ve paid big bucks since then for an individual book that served no outside purpose, but filled my inner book-lust. I’d rather spend money on books than on most anything else.