Though the Sarvâstivâdins can hardly have accepted idealist metaphysics, yet the evidence of art and their own version of the Vinaya make it probable that they tolerated a moderate amount of mythology, and the Mahayanists, who like all philosophers were obliged to admit the provisional validity of the external world, may also have admitted their analysis of the same as provisionally valid. The strength of the Hinayanist schools lay in the Vinaya. The Mahayanists showed a tendency to replace it by legends and vague if noble aspirations. But a code of discipline was necessary for large monasteries and the code of the Sarvâstivâdins enjoyed general esteem in Central Asia and China.

Three stages in the history of Indian Buddhism are marked by the names of Aśvaghosha, Nâgârjuna and the two brothers Asanga and Vasubandhu. It would be easier to give a precise description of its development if we were sure which of the works ascribed to these worthies are authentic, but it seems that Aśvaghosha represents an ornate and transitional phase of the older schools leading to Mahayanism, whereas Nâgârjuna is connected with the Prajñâ-pâramitâ and the nihilistic philosophy described in the preceding chapter. Asanga was the founder of the later and more scholastic system called Yogâcâra and is also associated with a series of revelations said to have been made by Maitreya.

As mentioned above, tradition makes Aśvaghosha,²⁰³ one of the most brilliant among Sanskrit writers, live at the court of Kanishka²⁰⁴ and according to some accounts he was given to the Kushans as part of a war indemnity. The tradition²⁰⁵ is confirmed by the style and contents of his poems and it has been noted by Foucher that his treatment of legends is in remarkable accord with their artistic presentment in the Gandharan sculptures. Also fragmentary manuscripts of his dramas discovered in Central Asia appear to date from the Kushan epoch. Aśvaghosha's rank as a poet depends chiefly on his Buddhacarita, or life of the Buddha up to the time of his enlightenment. It is the earliest example of a Kâvya, usually translated as artificial epic, but here literary skill is subservient to the theme and does not, as too often in later works, overwhelm it. The Buddha is its hero, as Râma of the Râmâyana, and it sings the events of his earlier life in a fine flow of elaborate but impassioned language. Another of his poems,²⁰⁶ discovered only a few years ago, treats of the conversion of Nanda, the Buddha's half-brother.

Various other works are ascribed to Aśvaghosha and for the history of Buddhism it is of great interest to decide whether he was really the author of The Awakening of Faith. This skilful exposition of a difficult theme is worthy of the writer of the Buddhacarita but other reasons make his authorship doubtful, for the theology of the work may be described as the full-blown flower of Mahayanism untainted by Tantrism. It includes the doctrines of Bhûta-tathatâ, Âlaya-vijñâna, Tathâgatagarbha and the three bodies of Buddha. It would be dangerous to say that these ideas did not exist in the time of Kanishka, but what is known of the development of doctrine leads us to expect their full expression not then but a century or two later and other circumstances raise suspicions as to Aśvaghosha's authorship. His undoubted works were translated into Chinese about 400 A.D. but The Awakening of Faith a century and a half later.²⁰⁷ Yet if this concise and authoritative compendium had existed in 400, it is strange that the earlier translators neglected it. It is also stated that an old Chinese catalogue of the Tripitaka does not name Aśvaghosha as the author.²⁰⁸

The undoubted works of Aśvaghosha treat the Buddha with ornate but grave rhetoric as the hero of an epic. His progress is attended by miracles such as Indian taste demands, but they hardly exceed the marvels recounted in the Pali scriptures and there is no sign that the hero is identified, as in the Ramayana of Tulsi Das or the Gospel according to St. John, with the divine spirit. The poet clearly feels personal devotion to a Saviour. He dwells on the duty of teaching others and not selfishly seeking one's own salvation, but he does not formulate dogmas.

The name most definitely connected with the early promulgation of Mahayanism is Nâgârjuna.²⁰⁹ A preponderance of Chinese tradition makes him the second patriarch after Aśvaghosha²¹⁰ and this agrees with the Kashmir chronicle which implies that he lived soon after Kanishka.²¹¹ He probably flourished in the latter half of the second century. But his biographies extant in Chinese and Tibetan are almost wholly mythical, even crediting him with a life of several centuries, and the most that can be hoped is to extract a few grains of history from them. He is said to have been by birth a Brahman of Vidarbha (Berar) and to have had as teacher a Sudra named Saraha or Râhulabhadra. When the legend states that he visited the Nâgas in the depths of the sea and obtained books from them, it seems to admit that he preached new doctrines. It is noticeable that he is represented not only as a philosopher but as a great magician, builder, physician, and maker of images.

Many works are attributed to him but they have not the same authenticity as the poems of Aśvaghosha. Some schools make him the author of the Prajñâ-pâramitâ but it is more usually regarded as a revelation. The commentary on it known as Mahâ-prajñâ-pâramitâ-śâstra is generally accepted as his work. A consensus of tradition makes him the author of the Mâdhyamika²¹² aphorisms of which some account has been given above. It is the principal authority of its school and is provided with a commentary attributed to the author himself and with a later one by Candrakîrti.²¹³ There is also ascribed to him a work called the Suhrillekha or friendly letter, a compendium of Buddhist doctrines, addressed to an Indian king.²¹⁴ This work is old for it was translated into Chinese in 434 A.D. and is a homily for laymen. It says nothing of the Mâdhyamika philosophy and most of it deals with the need of good conduct and the terrors of future punishment, quite in the manner of the Hinayana. But it also commends the use of images and incense in worship, it mentions Avalokita and Amitâbha and it holds up the ideal of attaining Buddhahood. Nâgârjuna's authorship is not beyond dispute but these ideas may well represent a type of popular Buddhism slightly posterior to Aśvaghosha.²¹⁵

In most lists of patriarchs Nâgârjuna is followed by Deva, also called Âryadeva, Kâṇadeva or Nîlanetra. I-Ching mentions him among the older teachers and a commentary on his principal work, the Śataśâstra, is attributed to Vasubandhu.²¹⁶ Little is known of his special teaching but he is regarded as an important doctor and his pupil Dharmatrâta is also important if not as an author at least as a compiler, for Sanskrit collections of verses corresponding to the Pali Dhammapada are ascribed to him. Âryadeva was a native of southern India.²¹⁷

The next epoch in the history of Buddhism is marked by the names of Asanga and Vasubandhu. The interval between them and Deva produced no teacher of importance, but Kumâralabdha, the founder of the Sautrântika school and perhaps identical with Kumârata the eighteenth Patriarch of the Chinese lists, may be mentioned. Hsüan Chuang says²¹⁸ that he was carried off in captivity by a king who reigned somewhere in the east of the Pamirs and that he, Aśvaghosha, Nâgârjuna and Deva were styled the four shining suns.

Asanga and Vasubandhu were brothers, sons of a Brahman who lived at Peshawar. They were both converted from the Sarvâstivâdin school to Mahayanism, but the third brother Virincivatsa never changed his convictions. Tradition connects their career with Ayodhya as well as with Peshawar and Vasubandhu enjoyed the confidence of the reigning monarch, who was probably Candragupta I. This identification depends on the hypothesis that Vasubandhu lived from about 280 to 360 A.D. which, as already mentioned, seems to me to have been proved by M. Péri.²¹⁹ The earlier Gupta kings though not Buddhists were tolerant, as is shown by the fact that the king of Ceylon²²⁰ was allowed to erect a magnificent monastery at Nâlanda in the reign of Samudragupta (c. 330-375 A.D.).

Asanga founded the school known as Yogâcâra and many authorities ascribe to him the introduction of magical practices and Tantrism. But though he is a considerable figure in the history of Buddhism, I doubt if his importance or culpability is so great as this. For if tradition can be trusted, earlier teachers especially Nâgârjuna dealt in spells and invocations and the works of Asanga²²¹ known to us are characterized by a somewhat scholastic piety and are chiefly occupied in defining and describing the various stages in the spiritual development of a Bodhisattva. It is true that he admits the use of magical formulæ²²² as an aid in this evolution but they form only a slight part of his system and it does not appear that the Chên-yen or Shingon sect of the Far East (the Sanskrit Mantrayâna) traced its lineage back to him.

Our estimate of his position in the history of Buddhism must depend on our opinion as to the authorship of The Awakening of Faith. If this treatise was composed by Aśvaghosha then doctrines respecting the three bodies of Buddha, the Tathâgatagarbha and the Âlaya-vijñâna were not only known but scientifically formulated considerably before Asanga. The conclusion cannot be rejected as absurd—for Aśvaghosha might speak differently in poems and in philosophical treatises—but it is surprising, and it is probable that the treatise is not his. If so, Asanga may have been the first to elaborate systematically (though not to originate) the idea that thought is the one and only reality. Nâgârjuna's nihilism was probably the older theory. It sounds late and elaborate but still it follows easily if the dialectic of Gotama is applied uncompromisingly not only to our mental processes but to the external world. Yet even in India the result was felt to be fantastic and sophistical and it is not surprising if after the lapse of a few generations a new system of idealism became fashionable which, although none too intelligible, was abstruse rather than paradoxical.

Asanga was alleged to have received revelations from Maitreya and five of his works are attributed to this Bodhisattva who enjoyed considerable honour at this period. It may be that the veneration for the Buddha of the future, the Messiah who would reign over his saints in a pure land, owed something to Persian influence which was strong in India during the decadence of the Kushans.²²³ Both Mithraism and Manichæism classified their adepts in various ranks, and the Yogâcâra doctors who delight in grading the progress of the Bodhisattva may have borrowed something from them.²²⁴ Asanga's doctrine of defilement (kleśa) and purification may also owe something to Mani, as suggested by S. Lévi.

In spite of his literary merits Asanga remains a doctor rather than a saint or poet.²²⁵ His speculations have little to do with either Gotama or Amitâbha and he was thus not in living touch with either the old or new schools. His brother Vasubandhu had perhaps a greater position. He is reckoned as the twentieth Patriarch and Tibetan tradition connects him with the worship of Amitâbha.²²⁶

Paramârtha's life of Vasubandhu represents him as having frequented the court of Vikramâditya (to be identified with Candragupta I), who at first favoured the Sânkhya philosophy but accorded some patronage to Buddhism. During this period Vasubandhu was a Sarvâstivâdin but of liberal views²²⁷ and while in this phase wrote the Abhidharma-kośa, a general exposition of the Abhidharma, mainly according to the views of the Vaibhâshikas but not without criticism. This celebrated work is not well known in Europe²²⁸ but is still a text-book amongst Japanese Buddhist students. It gained the esteem of all schools and we are given to understand that it presupposed the philosophy of the Vibhâshâ and of the Jñâna-prasthâna. According to Paramârtha the original work consisted of 600 aphorisms in verse which were sent by the author to the monks of Kashmir. They approved of the composition but, as the aphorisms were concise, asked for fuller explanations. Vasubandhu then expanded his verses into a prose commentary, but meanwhile his views had undergone a change and when he disapproved of any Vaibhâshika doctrine, he criticized it. This enlarged edition by no means pleased the brethren of Kashmir and called forth polemics. He also wrote a controversial work against the Sânkhya philosophy.

Late in life Vasubandhu, moved by the entreaties of his brother Asanga, became a devout Mahayanist and wrote in his old age Mahayanist treatises and commentaries.²²⁹