I have 800 books of just Samuel Beckett's work, tons of his correspondence, personal letters that he wrote. I have copies of plays he used when he directed, so all of his handwritten notes are in the corners of the page.
Thinking fascinates me, and I probably spend too much time in my mind. My wife says that my perfect world is to be in the Suburban driving, with her next to me and the boys in the back seat and complete silence for two thousand miles.