From Anne-Laure Le Cunff:

An antilibrary is a private collection of unread books. […]

The goal of an antilibrary is not to collect books you have read so you can proudly display them on your shelf; instead, it is to curate a highly personal collection of resources around themes you are curious about. Instead of a celebration of everything you know, an antilibrary is an ode to everything you want to explore. […]

An antilibrary creates a humble relationship with knowledge. It reminds us that our knowledge is finite and imperfect.

I have more unread books than read, and at some point I decided to stop buying books until I read more of the ones I owned.

After learning about the antilibrary, I lifted my own restriction and started to buy books again. The result: I've been reading more than ever.