Several learned authors have discussed the debt of medieval Christian legend to India. The most remarkable instance of this is the canonization by both the Eastern and the Western Church of St. Joasaph or Josaphat. It seems to be established that this name is merely a corruption of Bodhisat and that the story in its Christian form goes back to the religious romance called Barlaam and Joasaph which appears to date from the seventh century[1131]. It contains the history of an Indian prince who was converted by the preaching of Barlaam and became a hermit, and it introduces some of the well-known stories of Gotama's early life, such as the attempt to hide from him the existence of sickness and old age, and his meetings with a cripple and an old man. The legends of St. Placidus (or Hubert) and St. Christopher have also been identified with the Nigrodha and Sutasoma Jâtakas[1132]. The identification is not to my mind conclusive nor, if it is admitted, of much importance. For who doubts that Indian fables reappear in Aesop or Kalilah and Dimnah? Little is added to this fact if they also appear in legends which may have some connection with the Church but which most Christians feel no obligation to believe.
But the occurrence of Indian legends in the Apocryphal Gospels is more important for it shows that, though in the early centuries of Christianity the Church was shy of this oriental exuberance, yet the materials were at hand for those who chose to use them. Many wonders attending the superman's birth were deliberately rejected but some were accepted and oriental practices, such as asceticism, appear with a suddenness that makes the suspicion of foreign influence legitimate.
Not only was monasticism adopted by Christianity but many practices common to Indian and to Christian worship obtained the approval of the Church at about the same time. Some of these, such as incense and the tonsure, may have been legacies from the Jewish and Egyptian priesthoods. Many coincidences also are due to the fact that both Buddhism and Christianity, while abolishing animal sacrifices, were ready to sanction old religious customs: both countenanced the performance before an image or altar of a ritual including incense, flowers, lights and singing. This recognition of old and widespread rites goes far to explain the extraordinary similarity of Buddhist services in Tibet and Japan (both of which derived their ritual ultimately from India) to Roman Catholic ceremonial. Yet when all allowance is made for similar causes and coincidences, it is hard to believe that a collection of such practices as clerical celibacy, confession, the veneration of relics, the use of the rosary and bells can have originated independently in both religions. The difficulty no doubt is to point out any occasion in the third and fourth centuries A.D. when oriental Christians other than casual travellers had an opportunity of becoming acquainted with Buddhist institutions. But the number of resemblances remains remarkable and some of them—such as clerical celibacy, relics, and confession—are old institutions in Buddhism but appear to have no parallels in Jewish, Syrian, or Egyptian antiquity. Up to a certain point, it is a sound principle not to admit that resemblances prove borrowing, unless it can be shown that there was contact between two nations, but it is also certain that all record of such contact may disappear. For instance, it is indisputable that Hindu civilization was introduced into Camboja, but there is hardly any evidence as to how or when Hindu colonists arrived there, and none whatever as to how or when they left India.
It is in Christian or quasi-Christian heresies—that is, the sects which were rejected by the majority—that Indian influence is plainest. This is natural, for if there is one thing obvious in the history of religion it is that Indian speculation and the Indian view of life were not congenial to the people of Europe and western Asia. But some spirits, from the time of Pythagoras onwards, had a greater affinity for oriental ways of thinking, and such sympathy was specially common among the Gnostics. Gnosticism consisted in the combination of Christianity with the already mixed religion which prevailed in Alexandria, Antioch and other centres, and which was an uncertain and varying compound of Judaism, Hellenistic thought and the ideas of oriental countries such as Egypt, Persia and Babylonia. Its fundamental idea, the knowledge of God or Gnosis, is clearly similar to the Jñânakâṇḍa of the Hindus[1133], but the emphasis laid on dualism and redemption is not Indian and the resemblances suggest little more than that hints may have been taken and worked up independently. Thus the idea of the Demiurgus is related to the idea of Iśvara in so far as both imply a distinction not generally recognized in Europe between the creator of the world and the Highest Deity, but the Gnostic developments of the Demiurgus idea are independent. Similarly though the Aeons or emanations of the Gnostics have to some extent a parallel in the beings produced by Brahmâ, Prajâpati or Vâsudeva, yet these latter are not characteristic of Hinduism and still less of Buddhism, for the celestial Buddhas and Bodhisattvas of the Mahâyâna are justly suspected of being additions due to Persian influence.
Bardesanes, one of the latest Gnostic teachers (155-233), wrote a book on Indian religion, quoted by Porphyry. This is important for it shows that he turned towards India for truth, but though his teaching included the pre-existence of the soul and some doctrine of Karma, it was not specially impregnated with Indian ideas. This, however, may be said without exaggeration of Carpocrates and Basilides who both taught at Alexandria about 120-130 A.D. Unfortunately we know the views of these interesting men only from the accounts of their opponents. Carpocrates[1134] is said to have claimed the power of coercing by magic the spirits who rule the world and to have taught metempsychosis in the form that the soul is imprisoned in the body again and again until it has performed all possible actions, good and evil. Therefore the only way to escape reincarnation (which is the object of religion) and to rise to a superior sphere of peace is to perform as much action as possible, good and evil, for the distinction between the two depends on intention, not on the nature of deeds. It is only through faith and love that a man can obtain blessedness. Much of the above sounds like a caricature, but it may be a misrepresentation of something analogous to the Indian doctrine that the acts of a Yogi are neither black nor white and that a Yogi in order to get rid of his Karma creates and animates many bodies to work it off for him.
In Basilides we find the doctrines not only of reincarnation, which seems to have been common in Gnostic schools[1135], but of Karma, of the suffering inherent in existence and perhaps the composite nature of the soul. He is said to have taught that the martyrs suffered for their sins, that is to say that souls came into the world tainted with the guilt of evil deeds done in another existence. This guilt must be expiated by commonplace misfortune or, for the nobler sort, by martyrdom. He considered the world process to consist in sorting out confused things and the gradual establishment of order. This is to some extent true of the soul as well: it is not an entity but a compound (compare the Buddhist doctrine of the Skandhas) and the passions are appendages. He called God οὐκ ὢν θεός which seems an attempt to express the same idea as Brahman devoid of all qualities and attributes (nirguṇa). It is significant that the system of Basilides died out[1136].
A more important sect of decidedly oriental affinities was Manichæism, or rather it was a truly oriental religion which succeeded in penetrating to Europe and there took on considerably more Christianity than it had possessed in its original form. Mani himself (215-276) is said to have been a native of Ecbatana but visited Afghanistan, Bactria and India, and his followers carried his faith across Asia to China, while in the west it was the parent inspiration of the Bogomils and Albigenses. The nature and sources of his creed have been the subject of considerable discussion but new light is now pouring in from the Manichæan manuscripts discovered in Central Asia, some of which have already been published. These show that about the seventh century and probably considerably earlier the Manichæism of those regions had much in common with Buddhism. A Manichæan treatise discovered at Tun-huang[1137] has the form of a Buddhist Sûtra: it speaks of Mani as the Tathâgata, it mentions Buddhas of Transformation (Hua-fo) and the Bodhisattva Ti-tsang. Even more important is the confessional formula called Khuastuanift[1138] found in the same locality. It is clearly similar to the Pâtimokkha and besides using much Buddhist terminology it reckons killing or injuring animals as a serious sin. It is true that many of these resemblances may be due to association with Buddhism and not to the original teaching of Mani, which was strongly dualistic and contained many Zoroastrian and Babylonian ideas. But it was eclectic and held up an ascetic ideal of celibacy, poverty and fasting unknown to Persia and Babylon. To take life was counted a sin and the adepts formed an order apart who lived on the food given to them by the laity. The more western accounts of the Manichæans testify to these features as strongly as do the records from Central Asia and China. Cyril of Jerusalem in his polemic against them[1139] charges them with believing in retributive metempsychosis, he who kills an animal being changed into that animal after death. The Persian king Hormizd is said to have accused Mani of bidding people destroy the world, that is, to retire from social life and not have children. Alberuni[1140] states definitely that Mani wrote a book called Shâburkân in which he said that God sent different messengers to mankind in different ages, Buddha to India, Zarâdusht to Persia and Jesus to the west. According to Cyril the Manichæan scriptures were written by one Scythianus and revised by his disciple Terebinthus who changed his name to Boddas. This may be a jumble, but it is hard to stifle the suspicion that it contains some allusion to the Buddha, Śâkya-muni and the Bo tree.
I think therefore that primitive Manichæism, though it contained less Buddhism than did its later and eastern forms, still owed to India its asceticism, its order of celibate adepts and its regard for animal life. When it spread to Africa and Europe it became more Christian, just as it became more Buddhist in China, but it is exceedingly curious to see how this Asiatic religion, like the widely different religion of Mohammed, was even in its latest phrases the subject of bitter hatred and persistent misrepresentation.
Finally, do the Neoplatonists, Neopythagoreans and other pagan philosophers of the early centuries after Christ owe any debt to India? Many of them were consciously endeavouring to arrest the progress of Christianity by transforming philosophy into a non-Christian religion. They gladly welcomed every proof that the higher life was not to be found exclusively or most perfectly in Christianity. Hence bias, if not accurate knowledge, led them to respect all forms of eastern mysticism. Apollonius is said to have travelled in India[1141]: in the hope of so doing Plotinus accompanied the unfortunate expedition of Gordian but turned back when it failed. We may surmise that for Plotinus the Indian origin of an idea would have been a point in its favour, although his writings show no special hostility to Christianity[1142]. So far as I can judge, his system presents those features which might be expected to come from sympathy with the Indian temperament, aided perhaps not by reading but by conversation with thoughtful orientals at Alexandria and elsewhere. The direct parallels are not striking. Plato himself had entertained the idea of metempsychosis and much that seems oriental in Plotinus may be not a new importation but the elaboration of Plato's views in a form congenial to the age[1143]. Affirmations that God is τὸ ὄυ and τὸ ἕυ are not so much borrowings from the Vedânta philosophy as a re-statement of Hellenic ideas in a mystic and quietist spirit, which may owe something to India. But Plotinus seems to me nearer to India than were the Gnostics and Manichæans, because his teaching is not dualistic to the same extent. He finds the world unsatisfying not because it is the creation of the Evil One, but because it is transitory, imperfect and unreal.