[Borges]

You can get more out of fiction upon re-reading. Whereas once you've memorized the contents of non fiction book it no longer has value. King Lear doesn't really sink in with one reading. Or a 100.

[MineralMan]

"You can get more out of fiction upon re-reading. "

I should have been more specific. I was referring to recreational fiction, not the classics. I have all of those in my shelves.

As for non-fiction, most of what I buy is reference material. I don't memorize such books, but refer to them, as needed.