we find Shotoku Taishi lecturing on the "Hokekyo, Yuima Kyo," and "Shomangyo" (the last two, books of the Vinaya), and there must have been many others.
During the whole of this period of Korean influence the cause of Buddhism in Japan found a doughty champion in the Crown Prince, Shotoku Taishi (572-621), a rare personage, who united in himself the qualities of a general, a statesman, a theologian, and a mission-preacher. A more important factor in the progress made by the religion was the fact that Buddhism in Japan soon attracted the enthusiastic adherence of the women. In 577 the King of Kudara sent over a nun, who must have been a very good mission worker. In 584 several Japanese women were admitted to the Order. In 588 a band of Japanese nuns went over to Korea to study. In 590 they returned, bringing with them the disciplinary rules of the Vinaya, and were well received by the people of Naniwa (Osaka), who built them a convent and allowed them to receive many postulants. It is probable that these pious women, teaching the comparatively simple doctrines contained in the Vinaya books, did much more to recommend the faith of Buddha to their countrymen than did the Mantra priest with his incantations and magic, or the ordinary bonze with his Kusha, Sanron, or Jojitsu speculations.
The Vinaya books are divided into four sets. They represent the disciplinary books of the four Hinayana sects, Sarvastivadins, Dharmaguptas, Vibhas'ikas, and Mahis'akas--which alone had any connection with Chinese missions. What the precise differences between these traditions were we know not, and which tradition found its way through Korea to Japan, we cannot tell. Possibly there was not much to choose between them; but the lesson to be learned from the four divisions is worth
remembering. For, if the Discipline might be altered a little, it might also be altered much, and if it might be altered much, it might also be abolished entirely. In later years, Shinran Shonin's reforms practically swept away the whole discipline, and we may presume that it was by arguments such as these that he justified his action. But be that as it may. The pious women of Japan took kindly to the definite rules of Vinaya Buddhism, and their adherence to the new religion was of immense importance. There were not wanting signs of the need of discipline amongst religious communities, even in those early days.