“Reincarnation, which literally means “to be made flesh again,” is the belief that after death the soul lives on in another body. The soul might inhabit a similar body (e.g., a man’s soul enters another man’s body) or even a radically dissimilar body (e.g., a man’s soul enters a frog’s body). Regardless of what form reincarnation takes, the Catechism states:
Death is the end of man’s earthly pilgrimage, of the time of grace and mercy which God offers him so as to work out his earthly life in keeping with the divine plan, and to decide his ultimate destiny. When “the single course of our earthly life” is completed, we shall not return to other earthly lives: “It is appointed for men to die once” (Heb. 9:27). There is no “reincarnation” after death (CCC 1013).
In the third century, Origen said reincarnation was “foreign to the church of God, and not handed down by the Apostles, nor anywhere set forth in the Scriptures.” There are several arguments that support the Church’s rejection of reincarnation. First, in the fourth century St. Ambrose of Milan wrote that it would be impossible that “the soul which rules man should take on itself the nature of a beast so opposed to that of man,” or that man, “being capable of reason should be able to pass over to an irrational animal.” In other words, the migration of souls between human and animals is as impossible as the procreation of bodies between humans and animals.
Second, humans do not behave as if they possessed souls that lived before the birth of their body. The third-century ecclesial writer Tertullian put it this way:
If souls depart at different ages of human life, how is it that they come back again at one uniform age? For all men are imbued with an infant soul at their birth. But how happens it that a man who dies in old age returns to life as an infant? . . . I ask, then, how the same souls are resumed, which can offer no proof of their identity, either by their disposition, or habits, or living?
The absence of animals and infants who act like mature adults is evidence against the theory of reincarnation. Of course, a defender of reincarnation could say that while a person’s soul inhabits a new body, his memories and personality do not. But this makes reincarnation the practical equivalent of not surviving death. It also begs the question; as St. Irenaeus argued in the second century, “If we don’t remember anything before our conception, then how do advocates of reincarnation know we’ve all been reincarnated?”
Other defenders of reincarnation offer empirical evidence in the form of “past-lives” testimony. These testimonies, such as those gathered among children by the late psychiatrist Ian Stevenson, are not convincing. For example, many of the subjects of Stevenson’s interviews were children who lived in places like India, where reincarnation is widely accepted. This means that their stories were more likely the products of social conditioning than actual memories of past lives.
Moreover, although the children in these studies were not thought to be capable of deceiving interviewers, they were capable of confusing fantasy with reality (e.g., telling stories about imaginary friends or imaginary adventures). In fact, many of the anecdotes Stevenson shares rely on ambiguous details that are better explained by a child’s imperfect grasp of reality. Skeptic Robert Carroll offers the following example:
One case involved an Idaho girl who at age 2 would point to photographs of her sister, dead from a car accident three years before she was born, and say “that was me.” The believer thinks the two-year-old meant: “I was my sister in a previous life.” The skeptic thinks she meant: “That’s a picture of me.” The skeptic sees the two-year-old as making a mistake. The believer sees her as trying to communicate a message about reincarnation.
There is also a third argument against reincarnation, one that has been called “the population argument.” It relies on the claim made by proponents of reincarnation that new souls are never created or destroyed. Instead, souls are only “reborn” into other bodies. But, in Tertullian’s words, “If the living come from the dead, just as the dead proceed from the living, then there must always remain unchanged one and the selfsame number of mankind.” He noted (and modern science has confirmed) that there has been a “gradual growth of [the human] population.” This growth can only be explained by new souls coming into existence, and conflicts with the notion of the perpetual reincarnation of the same souls into different bodies.
Finally, scientists agree that life on earth began—at the earliest—billions of years ago. This disproves the idea that souls have been reincarnating into physical bodies for all eternity. As the Catechism says, “The Church teaches that every spiritual soul is created immediately by God—it is not ‘produced’ by the parents—and also that it is immortal: it does not perish when it separates from the body at death, and it will be reunited with the body at the final Resurrection” (CCC 366).”
Love,
Matthew
Summa Catechetica, "Neque enim quaero intelligere ut credam, sed credo ut intelligam." – St Anselm, "“Si comprehendus, non est Deus.” -St Augustine, "Let your religion be less of a theory, and more of a love affair." -G.K. Chesterton, “When we pray we speak to God; but when we read, God speaks to us.” -St Jerome, "As the reading of bad books fills the mind with worldly and poisonous sentiments; so, on the other hand, the reading of pious works fills the soul with holy thoughts and good desires." -St. Alphonsus Liguori, "And above all, be on your guard not to want to get anything done by force, because God has given free will to everyone and wants to force no one, but only proposes, invites and counsels." –St. Angela Merici, “Yet such are the pity and compassion of this Lord of ours, so desirous is He that we should seek Him and enjoy His company, that in one way or another He never ceases calling us to Him . . . God here speaks to souls through words uttered by pious people, by sermons or good books, and in many other such ways.” —St. Teresa of Avila, "I want a laity, not arrogant, not rash in speech, not disputatious, but men and women who know their religion, who enter into it, who know just where they stand, who know what they hold and what they do not, and who know their creed so well that they can give an account of it, who know so much of history that they can defend it. I want an intelligent, well-instructed laity… I wish you to enlarge your knowledge, to cultivate your reason, to get an insight into the relation of truth to truth, to learn to view things as they are, to understand how faith and reason stand to each other, what are the bases and principles of Catholicism, and where lie the main inconsistences and absurdities of the Protestant theory.” (St. John Henry Newman, “Duties of Catholics Towards the Protestant View,” Lectures on the Present Position of Catholics in England), "We cannot always have access to a spiritual Father for counsel in our actions and in our doubts, but reading will abundantly supply his place by giving us directions to escape the illusions of the devil and of our own self-love, and at the same time to submit to the divine will.” —St. Alphonsus Ligouri, "The harm that comes to souls from the lack of reading holy books makes me shudder . . . What power spiritual reading has to lead to a change of course, and to make even worldly people enter into the way of perfection." –St. Padre Pio, "Screens may grab our attention, but books change our lives!" – Word on Fire, "Reading has made many saints!" -St Josemaría Escrivá, "Do you pray? You speak to the Bridegroom. Do you read? He speaks to you." —St. Jerome, from his Letter 22 to Eustochium, "Encounter, not confrontation; attraction, not promotion; dialogue, not debate." -cf Pope Francis, "God here speaks to souls through…good books“ – St Teresa of Avila, Interior Castle, "You will not see anyone who is really striving after his advancement who is not given to spiritual reading. And as to him who neglects it, the fact will soon be observed by his progress.” -St Athanasius, "To convert someone, go and take them by the hand and guide them." -St Thomas Aquinas, OP. 1 saint ruins ALL the cynicism in Hell & on Earth. “When we pray we talk to God; when we read God talks to us…All spiritual growth comes from reading and reflection.” -St Isidore of Seville, “Also in some meditations today I earnestly asked our Lord to watch over my compositions that they might do me no harm through the enmity or imprudence of any man or my own; that He would have them as His own and employ or not employ them as He should see fit. And this I believe is heard.” -GM Hopkins, SJ, "Only God knows the good that can come about by reading one good Catholic book." — St. John Bosco, "Why don't you try explaining it to them?" – cf St Peter Canisius, SJ, Doctor of the Church, Doctor of the Catechism, "Already I was coming to appreciate that often apologetics consists of offering theological eye glasses of varying prescriptions to an inquirer. Only one prescription will give him clear sight; all the others will give him at best indistinct sight. What you want him to see—some particular truth of the Faith—will remain fuzzy to him until you come across theological eye glasses that precisely compensate for his particular defect of vision." -Karl Keating, "The more perfectly we know God, the more perfectly we love Him." -St Thomas Aquinas, OP, ST, I-II,67,6 ad 3, “But always when I was without a book, my soul would at once become disturbed, and my thoughts wandered." —St. Teresa of Avila, "Let those who think I have said too little and those who think I have said too much, forgive me; and let those who think I have said just enough thank God with me." –St. Augustine, "Without good books and spiritual reading, it will be morally impossible to save our souls." —St. Alphonsus Liguori "Never read books you aren't sure about. . . even supposing that these bad books are very well written from a literary point of view. Let me ask you this: Would you drink something you knew was poisoned just because it was offered to you in a golden cup?" -St. John Bosco " To teach in order to lead others to faith is the task of every preacher and of each believer." —St. Thomas Aquinas, OP. "Prayer purifies us, reading instructs us. Both are good when both are possible. Otherwise, prayer is better than reading." –St. Isidore of Seville “The aid of spiritual books is for you a necessity.… You, who are in the midst of battle, must protect yourself with the buckler of holy thoughts drawn from good books.” -St. John Chrysostom