The Astral Library and the books within it are crucial symbols in the novel that reflect Books as a Space for Escape and Healing. The Library and its books represent escape and sanctuary, a place for healing from trauma, and a site of philosophical contention.

First, the Library is a place of sanctuary, as described by the Librarian in Chapter 4 and reiterated by Alix in Chapter 22. The Astral Library, and by extension all libraries, are places of safety, open to all, where anyone can enter and exist without the need to justify themselves. Libraries are quintessential third spaces—spaces for community, connection, and the free sharing of knowledge.

The books within them are likewise places of escape. Metaphorically, books allow readers to escape their own lives, as Alix does when she reads her favorite comfort book, The Voyage of the Dawn Treader. The living books within the Astral Library turn this metaphorical escape into a literal one, in which Patrons can hide from their real-world lives. This kind of escape is often necessary, particularly for those like Alix and Sarah, who have suffered from abuse and trauma. By escaping into these worlds, such Patrons have the safety and time to heal from the various traumas inflicted upon them in the real world.

Finally, the Library and the books symbolize a site of contention—philosophical arguments about the purpose and potential of libraries throughout history. The Astral Library becomes a literal battlefield upon which two opposing views, represented by Alix (in favor of libraries as sanctuaries) and Elizabeth and the Board (in favor of modernizing libraries for profit) wage a violent, physical battle. The concept of censorship becomes the literal killing of books when Darla stamps them with the DISCARD stamp, and the fate of the Library is decided when the books themselves rise in their own defense.