Already in the oldest documents, drawn up by the disciples soon after the Buddha's death, he is identified with certain ancient sages of renown. That a religious teacher should claim to be successor of the prophets of old is not uncommon in the history of religions. But the current belief in metempsychosis led, or enabled, the early Buddhists to make a much wider claim. It was not very long before they gradually identified their master with the hero of each of the popular fables and stories of which they were so fond. The process must have been complete by the middle of the 3rd century B.C.; for we find at that date illustrations of the Jatakas in the bas-reliefs on the railing round the Bharahat tope with the titles of the Jataka stories inscribed above them in the characters of that period.[1] The hero of each story is made into a Bodhisatta; that is, a being who is destined, after a number of subsequent births, to become a Buddha. This rapid development of the Bodhisatta theory is the distinguishing feature in the early history of Buddhism, and was both cause and effect of the simultaneous growth of the Jataka book. In adopting the folk-lore and fables already current in India, the Buddhists did not change them very much. The stories as preserved to us, are for the most part Indian rather than Buddhist. The ethics they inculcate or suggest are milk for babes; very simple in character and referring almost exclusively to matters common to all schools of thought in India, and indeed elsewhere. Kindness, purity, honesty, generosity, worldly wisdom, perseverance, are the usual virtues praised; the higher ethics of the Path are scarcely mentioned. These stories, popular with all, were especially appreciated by that school of Buddhists that laid stress on the Bodhisatta theory--a school that obtained its chief support, and probably had its origin, in the extreme north-west of India and in the highlands of Asia. That school adopted, from the early centuries of our era, the use of Sanskrit, instead of Pali, as the means of literary expression. It is almost impossible, therefore, that they would have carried the canonical Pali book, voluminous as it is, into Central Asia. Shorter collections of the original stories, written in Sanskrit, were in vogue among them. One such collection, the Jataka-mala, by Arya Sura (6th century), is still extant. Of the existence of another collection, though the Sanskrit original has not yet been found, we have curious evidence. In the 6th century a book of Sanskrit fables was translated into Pahlavi, that is, old Persian (see Bidpai). In succeeding centuries this work was retranslated into Arabic and Hebrew, thence into Latin and Greek and all the modern languages of Europe. The book bears a close resemblance to the earlier chapters of a late Sanskrit fable book called, from its having five chapters, the _Pancha tantra_, or Pentateuch.