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Books like The Subtle Knife

The Subtle Knife by Philip Pullman: what to read next, and why.

The Amber Spyglass Philip Pullman 2000 · Fantasy The finale, which carries these ideas to a much grander and emotional conclusion.
A Wizard of Earthsea Ursula K. Le Guin 1968 · Fantasy Another thoughtful fantasy about power, balance and the cost of using magic.
The Lightning Thief Rick Riordan 2005 · Fantasy A much lighter and funnier fantasy with an equally quick pace and young heroes.