FOREWORD: When traveling to our origins becomes an unsettled subject for us and when recognizing our Afro-Cuban roots is unavoidable, the best remedy is the immersion into the ocean of studies and books that the anthropological tradition has made available to the future. Each religion proposes its Absolute Truth, its own map of the Hereafter. Human beings spend many of the few years of their lives asking themselves what lies beyond death. Perhaps that is why they created Theology, also called the Science of Religion. Here you will find, divided into precise themes, the Yoruba world with its liturgy, its linguistic binnacle and its relation with the supernatural, so similar to the human condition.