Have you ever thought about the uniqueness and simplicity of One? Is Four really so square and why are there Seven days of the week, Seven deadly sins, indeed Seven wonders of the world? This book takes a hands-on approach to such various topics as musical harmony, the probabilities in poker, code breaking and the lottery. One to Nine ranges widely through literature, music, philosophy, politics, and whatever else occurs to its author, in a charmingly scholarly and entertaining way. A joyous read