Leonard David's book is one part history, one part theory. The first half deals with the world's rush to land on the moon, and the second half explores the possibilities that come with mining its resources and colonizing it. All of this is interesting, but the book is a shallow exploration of these ideas. It's enough to give you a cursory idea of what a realistic (albeit incredibly optimistic) vision of the future is, particularly when it comes to mining moon ice and setting up lunar bases. Still, it doesn't explore these issues in any depth.