proto-Inklings

From another thread on Inklings, G.K. Chesterton was mentioned. I would like to lend a book by him to a non-Christian relative who reads a lot. I struggle to read GKC, even while appreciating every little morsel.

Would The Flying Inn be good, do you think? It's the only GKC I've read through.

I like the Father Brown stories best of what I've read. I recently read Tremendous Trifles, a collection of essays, and liked it very much. Any collection of his essays would probably be good. There is The Man Who was Thursday which is probably his most famous work. The Autobiography of G. K. Chesterton is also an excellent book.