A useful book in Spanish for anyone interested in comparative religion. In this book, he will find many surprises that challenge what many once believed as absolute truths. This book has been written as the result of dialogues the author had with a Christian clergy as well as laity. The discussions were polite, pleasant, friendly, and constructive without the slightest intention of hurting the religious feeling of any Christian. It is just a challenge to Christianity. It is indispensable for those looking for the truth and those studying comparative religion.