I just finished The Metaphysical Club, a very interesting book that I recommend. Apart from its main tale of the evolution of pragmatism, it has many fun side stories, including the beginnings of some universities (Johns Hopkins, the University of Chicago) and some background on academic freedom. Anyway, good stuff.
After finishing, I was thinking about what to read next, and decided on Portnoy's Complaint, which a friend bought for me a while back. It's a new read for me, and for a while I've been wondering what the proper ratio should be between reading new books and re-reading old ones. For many good books, I imagine I would get much more from a second read than from the first; this certainly holds for film. On the other hand, I always feel that there are tons of good books that I haven't read yet, and I should be working on those. I guess the same dilemma holds for movies, but since I can watch a movie much faster than I can read a book, I haven't given it as much thought.
Anyway, any thoughts on a good ratio? Or is going with your gut the best thing to do?