A mostly readable and entertaining book which has nonetheless mostly slipped my mind since I read it. The main thesis was that the Celtic tradition — which it has to work to define, given the arguments about such a thing existing at all — drove a surprising amount of the development of modern society. I seem to recall there was something that annoyed me, and I think it was in the section on King Arthur. Just… that whole condescending attitude about the Welsh hope for and belief in the return of Arthur.
While I like that it acknowledges a Celtic identity and influence, I’m not sure I’d recommend this book. There have been some really fascinating books about the Celtic culture, even Nora Chadwick’s outdated The Celts, which I’d recommend more.