While Buddhists do not have the right to proselytize, but this book shows an open mind quite remarkable clearly showing the different 'schools' of Buddhism, their history, their components and practices in Theravada history Zen and Vajrayana. The authors explain the reader that the constraints that each attaches depend first of his choice and the chosen path. I can only recommend this book to all those wishing to understand what Buddhism or as intellectual curiosity, or to initiate a personal process.