[Nevermark]

> The book itself is a kind of memory totem

My phrase for this is "Books are bookmarks".

Even unread books form a physical reminder to read, and of the import of the topic they cover.

When I come across a book that covers something important well, I buy it. I will likely read it, but even if it just keeps reminding me of the topic, reinforcing my integrated web of understanding, it is doing good.