About the Author
Vasubandhu (ca.350-430 A.D.) was born in Purusapura in Gandhara and is, next to Asanga (ca. 330-405 A.D.), his half brother, the most famous personage of the Yogacara school. He originally belonged to the Sravakayana school of the Sarvastivadins and had already made a name for himself through the composition of numerous treatises when he was won over to the Mahayana by Asanga, sometime in his forties. Vasubandhu counts as the great systematizer of Buddhism and is one of the six great ornaments-six great commentators of the Buddha's teaching. Even though in the Kosa Vasubandhu seems to be generally partisan to the "Hinayana"-Sautrantikas, he too was evidently open-minded, of which fact the Kosa is a testimony, and accordingly he did not seem to have become exclusively partisan to the tenets of any group as such be it those of Hinayana or Yogacara-Sautrantika or Sarvastivada.