Reincarnation, as a doctrine or mystical belief, holds the notion that one's 'Spirit' ('Soul' depending on interpretation), 'Higher or True Self', 'Divine Spark', 'I' or 'Ego' (not to be confused with the ego as defined by psychology) or critical parts of these returns to the material world after physical death to be reborn in a new body. The natural process is considered integrative of all experiences from each lifetime. A new personality feature, with the associated character, is developed during each life in the physical world, based upon past integrated experience and new acquired experiences. Some reincarnation philosophies express the idea that rebirth is made each time in alternated female and male type of bodies. Also that there is interaction between predeterminism of certain experiences or lessons intended to happen during the physical life, and the free-will action of the individual as they live that life.

This doctrine is a central tenet within Hinduism, Sikhism, Jainism, Surat Shabda Yoga, Spiritism, some African religions, as well as various other religions teachings and esoteric philosophies. Most modern Pagans also believe in reincarnation.

Reincarnation is traditionally understood to be akin to the Buddhist concept of Rebirth, but in fact the two concepts are very distinct philosophically - Buddhism teaches that there is no self to reincarnate. An alternative view is that the teachings of Buddhism might stress one aspect, the teachings of Hinduism might stress another aspect, but that an advanced Buddhist and an advanced Hindu would directly perceive the phenomenon of reincarnation identically.

Overview

Belief in reincarnation is an ancient phenomenon; in various guises humans have believed in a future life since the Ancient Egyptians, perhaps earlier, and ancient graves containing both people and possessions may testify to beliefs that a person would have need for their treasured possessions once again despite physical death.

In brief, there are several common concepts of a future life. In each of them either the person, or some essential component that defines that person (variously called the soul or spirit) persists in continuing existence:

1 - People live on this earth, and then live in some kind of afterlife for the rest of eternity - variously called heaven (paradise) or hell, or the Kingdom of the Dead, or some higher plane, or similar. They do not return to earth as such.

2 - People die, but will return to the earth or are revived in some final Judgement, or at some final battle (eg the Norse Ragnarok). They may go to heaven or hell at that time, or live again and repopulate the earth. This is often called an apocalyptic vision of the future.

3 - People die, and are returned to this or another existence continually, their form upon return being of a 'higher' or 'lower' kind depending upon the virtue (moral quality) of their present life. This is often called Transmigration.

4 - People die, go through inner planes and return, re-birth, (usually or often) as new human beings. Strictly, it is this which is known as reincarnation (also called "rebirth"). In many versions, eventually there is the potential to escape the cycle, e.g. by joining God, enlightenment, some kind of self-realization, a spiritual rebirth, entering a spiritual realm, etc. (There is some confusion, in general society, between reincarnation and transmigration; see below for comparison)
 

Beliefs in reincarnation or transmigration are widespread amongst religions and beliefs, some seeing it as part of the religion, others seeing in it an answer to many common moral and existential dilemmas, such as "why are we here" and "why do bad things sometimes appear to happen to good people". Reincarnation is therefore a claim that a person has been or will be on this earth again in a different body. It suggests that there is a connection between apparently disparate human lifetimes, and (in most cases) that there may even be covert evidence of continuity between different people's lifetimes, if looked for. Proponents claim this is indeed the case, whilst critics tend to reject the notion due to its metaphysical implications or non-acceptance by science due to other possible explanations of the phenomenon not yet eliminated from consideration. Such evidence tends to be of three kinds:

1 - Tradition commonly holds that certain people (such as the Dalai or Panchen Lamas in Buddhism) can be identified by looking for a child born at the time of their death, and by certain signs and knowledge that such a child has of their predecessor life beyond the norm. In the case of Buddhism there are well defined tests of such a child.
2 - In Western culture, regression or near death experience has at times provided what are claimed to be past life memories, some of which can in theory be verified, and some of which might be tested for fraudulent claims. Some aspects of these tend to be quite consistent in some ways (beings of light, messages of love and peace, etc), a factor which to some people lends credence to the idea, and to others supports that "something" is going on but without certainty what that might be.
3 - Last, for many people, the evidence is internal and empirical, personal belief or experience. This may not be proof as such, but to them, qualifies as sufficient evidence to believe it.

As the introduction suggests, there is an apparent difference between lower-order Buddhism and lower-order Hinduism in as much as the former emphasises that the ego or personal self is empty of content and does not truly exist whereas the latter tends towards the position that the Jiva or personal self while existing, is none-the-less a false self. For Buddhism in part, this is a linguistic artefact in that the remainder (after the personal self is "neutralised, detached from its internalised tendencies [vasanas], transcended") is said to be nothingness whereas for Hinduism this residual is the “higher-self”, the Atman or more properly in English the "True Self". In either case both Buddhism and Hinduism hold this state to be “beyond description” for the inhabitants of the “normal everyday” world. To the western mind this last-mentioned world is often termed the “real world” whereas to both Buddhism and Hinduism this is the world of “Samsara” and of “name and form” respectively. The Real is, for Hinduism, the supra-consciousness that perceives the world of name and form to be empty, or at best sees it as a “mental construct”. Shiva is thus termed “the destroyer” because his is the name attached to the consciousness, in realisation of which, the destruction (dissolution) of the world of name and form, is seen. For Buddhism this same realm is “Nirvana”, the perspective of the Buddha-mind. Through either linguistic construct, the viewpoint must be treated as the same and in both cases; freedom from Samsara is “on offer”.

It may be asked how reincarnation fits into this picture. In a word, for Buddhism it doesn’t fit at all, for if there is no personal self there can be no soul but since the Buddha himself referred to his past-lives it must be inferred that these existed only in the world of the mind and that this is furthermore exactly the same state as is perceived by the one experiencing (or immersed in) the cyclic manifestation of Samsara. For Hinduism this state both exists and does not exist so that it may be likened to a dream-state, unreal in every sense. Thus from both perspectives, reincarnation cannot be likened to the re-appearance of the spirit or person within a physical body which inhabits an objective physical world rather, the perception of the world alone exists as a manifestation, around the conscious being, and this is maintained as an act of mind only. To be trapped in Samsara then is to be held by ignorance of the true nature of being, in a self-created world of error. As such, this is really nothing other than a dream. The major point referenced by both Buddhism and Hinduism concerns the necessity of awakening from this repetitive dream-state by obtaining ”Nirvana” for the former and by achieving “Enlightenment” for the latter. Both are words specifying the exact same state and all lives, past & present, are then to be seen as products of mind only.

Many paths are offered toward this state of liberation or “heaven” and most are generally initiated by proposing this life to be “real”. This of course means that past-lives are also to be seen as real. However, significant progression on any such path soon causes this initial, every-day concept of “reality” to wither away. As unity with the god-head is approached, the essence of being is recalled with the result that the previously perceived “reality” vanishes as unity is achieved.

Whilst science is perhaps not as scathing of reincarnatory belief as it is of many other metaphysical concepts, and many claims have been documented in a scientific manner, it is important to be aware that formally, mainstream science does not accept yet that reincarnation is a proven phenomenon, or that it happens. Many apparently proven phenomena turn out to be illusional over time, and others, such as the soul, are often deemed by many to simply be unknowable, and hence by definition outside its province.


Reincarnation in various religions, traditions and philosophies

Eastern religions and traditions

Hinduism

In India this doctrine was thoroughly established from ancient times. While metempsychosis was not established in the older sections of the Vedas, it was explicated first in the Upanishads (c. 1000 BC - AD 4), which are philosophico-mystic texts held to be the essence of the Vedas.

The idea that the soul reincarnates is intricately linked to karma, whose first explication was also seen in the Hindu books of the Upanishads. The idea is that individual souls, jiva-atmas pass from one plane of existence and carry with them samskaras (impressions) from former states of being. These karmic agglomerations on the soul are taken to the next life and result in a causally-determined state of being. In some schools of Hinduism liberation from samsara, the cycle of death and rebirth, is considered the ultimate goal of earthly existence. This is known as Moksha, mahasamadhi (or nirvana, also found in Buddhism) in Hinduism. Other Bhakti traditions assert that liberation from samsara is merely the beginning of real spiritual life and beyond nirvana activities still continue, but that they are no longer of a worldly nature. Both sides agree on the pheomenom of reincarnation itself.

Buddhism and Vedanta (in particular Advaita Vedanta) further promoted the notion of nirvana following the advent of the great Hindu sage Adi Shankaracharya. The idea that stilling one's karmas (actions) and becoming at one, harmonious, with all would free one, ultimately, from reincarnation, became a central tenet of Hinduism. It displaced more complex Puranic systems positing the gradual progression of a soul through 8,400,000 (sometimes more) lives until eventual awakening. Instead, it relied more on the idea of self-growth and enlightenment through Yoga. Buddhism differed in that it felt there was no soul to reincarnate and developed an elaborate complex of metaphysical explanations for temporary states of ego to explain rebirth.

Buddhism

Since according to Buddhism there is no permanent and unchanging soul there is no metempsychosis in the strict sense. However, Buddhism never rejected samsara, the process of rebirth or reincarnation; there is debate, however, over what is transmitted between lives.

In spite of the doctrinal beliefs against the idea of a soul, Tibetan Buddhists do believe that a new-born child may be the reincarnation of someone departed. In Tibetan Buddhism the soul of an important lama (like the Dalai Lama) is supposed to pass into an infant born nine months after his decease.

The Buddha has this to say on reincarnation. Kutadanta continued: "Thou believest, O Master, that beings are reborn; that they migrate in the evolution of life; and that subject to the law of karma we must reap what we sow. Yet thou teachest the non-existence of the soul! Thy disciples praise utter self-extinction as the highest bliss of Nirvana. If I am merely a combination of the sankharas, my existence will cease when I die. If I am merely a compound of sensations and ideas and desires, wither can I go at the dissolution of the body?" [7] Said the Blessed One: "O Brahman, thou art religious and earnest. Thou art seriously concerned about thy soul. Yet is thy work in vain because thou art lacking in the one thing that is needful. [8] "There is rebirth of character, but no transmigration of a self. Thy thought-forms reappear, but there is no egoentity transferred. The stanza uttered by a teacher is reborn in the scholar who repeats the word. [9]

Jainism

In Jainism, not only animals and humans but devas (gods) also reincarnate after they die. A Jainist, who accumulates enough good karma, may become a god; but, this is generally seen as undesirable since gods eventually die and one might then come back as a lesser being.

Ayyavazhi

Ayyavazhi says all souls are continuously reborn unless they reach Dharma Yukam, a state of union with God.

Judaism and Kabbalah

Classic works of the Kabbalah, Shaar ha Gilgulim ("Gate of Reincarnations") of Arizal or Isaac Luria, describes complex laws of reincarnation gilgul and impregnation ibbur of 5 different parts of the soul. It shows many references of reincarnation in the Hebrew Bible (the Tanach).

The notion of reincarnation is not openly mentioned in the Hebrew Bible. The classical rabbinic works (midrash, Mishna and Talmud) also are silent on this topic.

The concept was elucidated in an influential mystical work called the Bahir (Illumination) (one of the most ancient books of Jewish mysticism) which was composed by the first century mystic Nehunia ben haKana, and gained widespread recognition around 1150. After the publication of the Zohar in the late 13th century, the idea of reincarnation spread to most of the general Jewish community.

While ancient Greek philosophers like Plato and Socrates attempted to prove the existence of reincarnation through philosophical proofs, Jewish mystics who accepted this idea did not. Rather, they offered explanations of why reincarnation would solve otherwise intractable problems of theodicy (how to reconcile the existence of evil with the premise of a good God.)

Rabbis who accepted the idea of reincarnation include the founder of Chassidism, the Baal Shem Tov, Levi ibn Habib (the Ralbah), Nahmanides (the Ramban), Rabbenu Bahya ben Asher, Rabbi Shelomoh Alkabez and Rabbi Hayyim Vital. The argument made was that even the most righteous of Jews sometimes would suffer or be murdered unjustly. Further, children would sometimes suffer or be murdered, yet they were obviously too young for them to have committed sins that God would presumably punish them for. Jewish supporters of reincarnation said that this idea would remove the theodicy: Good people were not suffering; rather, they were reincarnations of people who had sinned in previous lifetimes. Therefore any suffering which was observed could be assumed to be from a just God. Yitzchak Blua writes "Unlike some other areas of philosophy where the philosophic battleground revolves around the truth or falsehood of a given assertion, the gilgul debate at points focuses on the psychological needs of the people." (p.6)

Martin Buber's collection of Legend of the Baal-Shem (Die Chassidischen Bücher) includes several of the Baal Shem Tov's stories that explicitly discuss concrete cases of reincarnating souls.

Rabbis who rejected the idea of reincarnation include Saadia Gaon, Hasdai Crescas, Yedayah Bedershi (early 14th century), Joseph Albo, Abraham ibn Daud and Leon de Modena. Saddia, in Emunoth ve-Deoth, concludes Section vi with a refutation of the doctrine of metempsychosis. Crescas writes that if reincarnation was real, people should remember details of their previous lives. Bedershi offers three reasons why the entire concept is dangerous: (a) There is no reason for people to try and do good in this life, if they fear that they will nonetheless be punished for some unknown sin committed in a past life. (b) Some people may assume that they did not sin in their past life, and so can coast on their success; thus there is no need to try hard to live a good life. In Bedershi's view, the only psychologically tenable worldview for a healthy life is to deal with the here-and-now. (c) The idea presents a conundrum for those who believe that at the end of days, God will resurrect the souls and physical bodies of the dead. If a person has lived multiple lives, which body will God resurrect? Joseph Albo writes that in theory the idea of gilgulim is compatible with Jewish theology. However, Albo argues that there is a purpose for a soul to enter the body, creating a being with free will. However, a return of the soul to another body, again and again, has no point. Leon De Moden thinks that the idea of reincarnation make a mockery of God's plans for humans; why does God need to send the soul back over and over? If God requires an individual to achieve some perfection or atone for some sin, then God can just extend that person's life until they have time to do what is necessary. de Modena's second argument against reincarnation is that the entire concept is absent from the entire Bible and corpus of classical rabbinic literature.

The idea of reincarnation, called gilgul, became popular in folk belief, and is found in much Yiddish literature among Ashkenazi Jews. Among a few kabbalists, it was posited that some human souls could end up being reincarnated into non-human bodies. These ideas can be found in a number of Kabbalistic works from the 1200s, and also among many mystics in the late 1500s. A distinction was made, however, between actual Transmigration and this form of reincarnation; the non-human subject had its own soul already, the human soul simply 'rode along with' the rock, or tree, or giraffe waiting to be 'elevated,' that is, to be raised to a higher level and to gradually approach the level of human again. The cow eats the grass, elevating the soul within it, the soul rides with the cow a while until a person eats the cow, and the soul is elevated to the max. Rabbi Chaim Vidal, when asked how he came to be the foremost desciple and sole transmitter of the teachings of his teacher, the great Issac Luria, credits, not study or mitzvot, but his diligence in blessing his food: "For this way I elevate the souls therein. These souls then become my witnesses in the Heavenly Realm, and empower me to receive even greater revelations."

"Over time however, the philosophical teaching limiting reincarnation to human bodies emerged as the dominant view. Nonetheless, the idea that one can reborn as an animal was never completely eliminated from Jewish thought, and appears centuries later in the Eastern European folk tradition". [Simcha Paull-Raphael,Jewish Views of the Afterlife, p.319]

While many Jews today do not believe in reincarnation, the belief is common amongst Orthodox Jews, particularly amongst Hasidim; some Hasidic siddurim (prayerbooks) have a prayer asking for forgiveness for one's sins that one may have committed in this gilgul or a previous one.

Christianity

Almost all present official Christian denominations reject reincarnation: exceptions include the Liberal Catholic Church. There is clear evidence that doctrines of reincarnation circulated in the early Church (before the 6th century A.D.) and were at least tolerated within the Church at that time. Two Church Fathers, Origen and Clement of Alexandria are frequently cited as supporting this.

Origen's writings have only come down to us heavily edited 'to conform to Church doctrine', and Origen's writings were later declared heretical by the Church (though Origen himself was not). However, Gregory of Nyssa cites Origen: By some inclination toward evil, certain souls ... come into bodies, first of men; then through their association with the irrational passions, after the allotted span of human life, they are changed into beasts, from which they sink to the level of plants. From this condition they rise again through the same stages and are restored to their heavenly place. (B.W. Butterworth, On First Principles, Book I, Chapter VIII (New York: Harper & Row, 1966), p. 73). Before the Church expurged what it considered his heretical ideas from editions of his works, other quotes of Origen were also recorded by early Church fathers that make it clear that he did indeed teach reincarnation. For a very balanced presentation of Origen's relationship to reincarnation, including many more quotes, see here.

Kurt Eggenstein claims that "Jerome wrote in a letter to Demetrius that among the early Christians, the doctrine of reincarnation had been passed on to the elect, as an occult tradition." He also quotes Gregory of Nyssa as saying that "It is a necessity of nature that the soul becomes purified in repeated lives." His book cites many more Christian authorities who have supported a belief in reincarnation.

In the New Testament, there are several passages that demonstrate that a belief in reincarnation was prevalent amongst those of Jesus' inner circle. He is asked if he is Elias, for example, in John 1:21; in Matthew 16:13-14 Jesus asks his disciples, ‘Who do men say that I, the Son of Man, am?’ And they said, ‘Some say that you are John the Baptist; some, Elias; and others, Jeremias, or one of the other prophets.’ Such statements are only comprehensible if Jesus' disciples believed in reincarnation. Finally, in Matthew 11:13-14, Jesus says: For all the prophets and the law prophesied until John. And if ye will receive it, this is Elias, which was for to come. This can only be understood in the light of the traditional Jewish prophecy that Elijah (Elias) would return one day, bringing on the Messianic age.

The Gnostic gospels include clear references to reincarnation, and it is clear that this early Christian (heretical) sect believed in this (see above).

There is also scriptural evidence in the official gospels which supports the claim that early Christians believed in reincarnation. Matthew 19:28 states: "Verily I say unto you, that ye which have followed me, in the regeneration (Greek -- pale-genesia literally, rebirth) when the Son of Man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel." A more well-known passage from John 3:3 reads, "...Except a man be born again (Greek -- ano-then), he cannot see the Kingdom of God." The quote from John is sometimes translated as "born from above", and is the inspiration for the modern evangelical movement. Both passages taken together unambiguously support the notion that reincarnation had a place in early Christianity.