I've been culling my book collection every time I move. During my last move in March I discarded a lot of books with sentimental value that were really just tak

I've been culling my book collection every time I move. During my last move in March I discarded a lot of books with sentimental value that were really just taking up space. Examples: my college textbooks on projective geometry and abstract algebra. I always loved how the more interesting the math, the thinner and more dense the textbook is. A pile of computer-related books. It's telling what I kept from that shelf: K&R's The C Programming Language. Stevens' Advanced Programming in the Unix Environment (I bought the former in 1993 and the latter in 1995, and they're both still useful from time-to-time.). What I have left are books I haven't read, but plan to, and books with extreme sentimental value.