reincarnation

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Reincarnation is the doctrine that the soul outlasts the death of the body and returns to live again in another — animal, human, or, in some accounts, plant or divine. The same idea travels under several names: metempsychosis and transmigration in the older Western vocabulary, rebirth in most modern usage. What they share is a single claim: that the self now living has lived before, and that physical death is a passage rather than an end.

In the Greek world the teaching is associated above all with Pythagoras and the Orphic religious movement, from which it passed to Plato. The earliest evidence is a joke: his contemporary Xenophanes has Pythagoras stop a man beating a puppy, claiming to hear a dead friend’s soul in its yelp. Ancient writers reported that Pythagoras claimed to remember his own earlier lives, though the Pythagorean texts that might confirm this do not survive. Empedocles went further, writing of divine spirits exiled for bloodshed and condemned to wander thirty thousand seasons through every form of mortal life — plant, animal, human — and counting himself among the exiles. Plato gave the doctrine its most influential form. His dialogues argue that the soul is immortal and pre-existent, that learning is in fact recollection of what the soul already knew, and that after death souls are judged and sent to be born again according to how they have lived. The myth of Er that closes the Republic describes souls choosing their next lives; the Phaedo makes immortality the hinge of the whole inquiry. Through Plato the idea entered Neoplatonism, where Plotinus treated the soul’s descent into body as a recurring feature of the cosmos, and from there it ran into later esoteric currents.

The Indian traditions developed the theme on a far larger scale and made it central rather than incidental. There, rebirth — saṃsāra, the round of existence — is bound to karma, the moral weight of past action, which determines the conditions of each successive birth; and across Hindu, Buddhist, and Jain schools the governing aim is not a better rebirth but release from the cycle altogether. The linkage of deed to destiny comes clearly into view in the early Upanishads, toward the middle of the first millennium BCE, in teachings the texts still treat as new and secret: a man becomes good by good action, bad by bad. What is reborn, though, divides the traditions. Hindu Vedānta holds that an imperishable self, the ātman, passes from body to body until it is known to be one with the absolute. Jain doctrine treats karma as a fine substance that clings to the soul and weighs it down. Buddhism teaches rebirth while denying any permanent self that is reborn: what crosses death is not a soul but a continuity of causes — a flame, its classical texts say, neither the same fire nor simply another. Popular summaries tend to blur this into the Hindu doctrine; Buddhist philosophers spent centuries keeping the two apart. These are not one doctrine in several costumes: a Platonist and a Buddhist mean genuinely different things by the soul, by what carries over, and by what would count as escape.

Historians treat the wide spread of the idea with care. Herodotus thought the Greeks had taken the doctrine from Egypt, where he said souls cycled through every animal in three thousand years; Egyptologists have found no such Egyptian teaching, and the report mainly shows how early the question of origins was asked. The resemblance between the Greek and the Indian versions has invited speculation about a shared origin or early contact, but the evidence is thin, and independent emergence is at least as plausible; the question remains open. What can be said is that belief in some form of return is among the more widely attested religious convictions, surfacing in settings with no demonstrable link to one another.

It surfaces even where scripture is silent. The Hebrew Bible and the Talmud know nothing of transmigration, yet the doctrine appears, already taken for granted, in the Sefer ha-Bahir at the end of the twelfth century; the kabbalists of sixteenth-century Safed — Isaac Luria above all — then made gilgul, the rolling of souls through bodies, an engine of cosmic repair, and from Safed it passed into popular Jewish belief. Mainstream Islam rejected transmigration early, but the Druze hold that every soul enters a newborn at the instant of death — Druze into Druze, never through animal forms, with all of a soul’s lives to be judged together at the end of time — and the Alevis of Anatolia preserve kindred teachings of the soul’s long circuit through existence.

The later Western revival owes most to the modern esoteric movements of the nineteenth century — French Spiritism and, above all, Theosophy — which folded reincarnation into a scheme of spiritual evolution across many lives: a reading that drew on the Indian sources then newly available in translation, and that remains the form in which the idea is most often encountered in the West today. Whether the doctrine describes anything real is a question no text settles, though a modern research program has tried to put the claim to empirical test — work taken up in this site’s entry on reincarnation research. What each tradition does settle, and in its own terms, is what the self is, what carries over, and what death leaves untouched.

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