Paring down a book collection is a very strange act for the bibliophile. I only did it once but the end result was a much sharper collection. (Un?)Fortunately since then I got a bigger place, more shelves, and now my collection is over 2x since then. But the day I donated a ton of books sticks out in my mind, I remember the weather, all of my movements, and even what I ate for lunch (chicken sandwich). Few days from the far past I remember so vividly.