After Aśvaghosha comes Nâgârjuna who may have flourished any time between 125 and 200 A.D. A legend which makes him live for 300 years is not without significance, for he represents a movement and a school as much as a personality and if he taught in the second century A.D. he cannot have been the _founder_ of Mahayanism. Yet he seems to be the first great name definitely connected with it and the ascription to him of numerous later treatises, though unwarrantable, shows that his authority was sufficient to stamp a work or a doctrine as orthodox Mahayanism. His biographies connect him with the system of idealist or nihilistic metaphysics expounded in the literature (for it is more than a single work) called Prajñâpâramitâ, with magical practices (by which the power of summoning Bodhisattvas or deities is specially meant) and with the worship of Amitâbha. His teacher Saraha, a foreigner, is said to have been the first who taught this worship in India. In this there may be a kernel of truth but otherwise the extant accounts of Nâgârjuna are too legendary to permit of historical deductions. He was perhaps the first eminent exponent of Mahayanist metaphysics, but the train of thought was not new: it was the result of applying to the external world the same destructive logic which Gotama applied to the soul and the result had considerable analogies to Śankara's version of the Vedanta. Whether in the second century A.D. the leaders of Buddhism already identified themselves with the sorcery which demoralized late Indian Mahayanism may be doubted, but tradition certainly ascribes to Nâgârjuna this corrupting mixture of metaphysics and magic. The third century offers a strange blank in Indian history. Little can be said except that the power of the Kushans decayed and that northern India was probably invaded by Persians and Central Asian tribes. The same trouble did not affect southern India and it may be that religion and speculation flourished there and spread northwards, as certainly happened in later times. Many of the greatest Hindu teachers were Dravidians and at the present day it is in the Dravidian regions that the temples are most splendid, the Brahmans strictest and most respected. It may be that this Dravidian influence affected even Buddhism in the third century A.D., for Aryadeva the successor of Nâgârjuna was a southerner and the legends told of him recall certain Dravidian myths. Bodhidharma too came from the South and imported into China a form of Buddhism which has left no record in India. 7. _Revival of Hinduism_