The first references to the idea of reincarnation are lost in the eternal night of history. We have news from it from around two thousand five hundred years ago, in the Upanishads [Holy Scriptures of Hinduism], the major Indian religion until today. In that period, Pythagoras (1), Greek philosopher and mathematic, born around the year 580 B.C., and who was a disciple of Pherecydes of Syros - said that the soul was immortal and, after the death of the body, it occupies other body - palingenesis - sometimes of an animal - metempsychosis [mistaken thesis of the mathematician of Samos]. According to historic sources, it is the first time that the reincarnation theory was mentioned in the West. Later, Plato (429-347 B.C.), also a Greek Philosopher, disciple of Socrates, taught that the soul was born many times, even during ten thousand years, and, then, leaves for the celestial blessedness.In the first centuries, many majoritarian Christian groups defended the palingenesis, specially the Gnostic (2), with their profoundly intelligent view of the body and matter in general. The extraordinary Christian Origin (3) of Alexandria defended the reincarnation. From his thoughts, a group of wise monks appeared and they also started to profess the doctrine of the pre-existences. For the "owners" of the clerical power the so-called "Origenism" became disastrous and disturbed, mainly Palestine; in view of that the patriarch of the church of Jerusalem, in the fourth century, asked Byzantine Emperor Justinian to intervene.The emperor wrote a treaty against Origin and lead the "owner" of the church of Constantinople to gather a synod there (4) in 543, which condemned the thesis related to the pre-existence of the soul and other Origenist positions. Ten years later, in 553, with the ambiguous acquiescence of Pope Virgil (5), Emperor Justinian summoned the Second Council of Constantinople in which he knowingly definitively removed the so called " Origenist controversy", through a spurious election which he won by 3 to 2 votes. And the reincarnation was definitively excluded from the principles of the ecclesiastic right. (6) Of course! The Church was defending, in this extravagant act, the heaven and hell doctrine and the eternal punishments because they centered more power in its hands. And this way reincarnation was excluded in one of the most serious mistakes made by the Christianity.Before that, in the third century, distinguished Clement of Alexandria remarked in his work called Stromata (Patchwork): "The hypothesis of Gnostic master Basilides says that the soul, having previously committed sins in another life, experiences punishment in this life.Also at that time Tertullian, the first Christian author to write in Latin, denying metempsychosis, expresses himself many times about the subject, as in this passage: "The worthier of acceptance is our teaching that the souls will return to the same bodies. And the more ridiculous is the inherited (pagan) teaching that the human spirit must reappear in a dog, horse, or peacock!" (Ad Nationes, Chapter 19). It is evident that similarly to the spiritualists, the wise men of the church did not accept metempsychosis either.The metempsychosis thesis conflicted the mind of