This work represents an important contribution to the study and the assessment of the religious phenomenon in Cuba, starting from its links with the social relations established on the different stages of the historic development of our country. On the whole, the studies in this field have been made, most of the times, on the subjective or apologetic bases; from a religious or atheist vision. Hence the value of this topical text written by Dr. Jorge Ramírez Calzadilla, who proposes - and achieves it -, to investigate on this phenomenon with scientific severity and objectivity. That is why this book is unquestionable reference for those who go deeper into such an interesting and complex subject.