Comment by julian_t

For me it's a bit of both. A programming book that I wrote over 10 years ago - the content is long out of date but the weight reminds me of the effort I put into producing it. Then there's my father's library, all 2000 books of it. I've kept about 50, on a wide variety of topics, and I value them both for the unusual content (Ancient churches of Wales; Jazz record catalogs from the 1940s; English artists from the early 20th century) and for the fact that they remind me of him.