How many books has Philip pullman ever wrote?

Philip Pullman has written 20 novels, including the "His Dark Materials" trilogy, "The Sally Lockhart" series, and "The Book of Dust" trilogy.

He has also written numerous other works, including:

* Short stories: He has published several collections of short stories, including "The Firework-Maker's Daughter" and "The Broken Page."

* Plays: He has written several plays, including "The Ruby in the Smoke" and "The Shadow in the North."

* Non-fiction: He has also written non-fiction books, including "The Angel's Game" and "The Reason for God."

If you're interested in a more specific count, you can find a complete list of his works on his website or Wikipedia page.