It was through his dealings with the Buddhists that Nobunaga made himself best known in history. He had lived among them in his early years, and had learned to hate and despise them. Having been educated in the Shinto faith, the ancient religion of Japan, he looked on the priests of Buddhism as enemies to the true faith. The destruction of these powerful sectaries was, therefore, one of the great purposes of his life. Nobunaga had other reasons than these for destroying the power of the bonzes. During the long period of the Ashikagas these cunning ecclesiastics had risen to great power. Their monasteries had become fortresses, with moats and strong stone walls. Internally these were like arsenals, and an army could readily be equipped from them with weapons, while many of the priests were daring leaders. During the civil wars they served the side that promised them the most spoil or power. Rivals among them often fought battles of their own, in which hundreds were killed and towns and temples burned. So great were their authority, their insolence, and their licentiousness that their existence had become an evil in the land, and Nobunaga determined to teach them a lesson they would not soon forget. Of the monasteries, the most extensive was that of Hiyeizan, on Lake Biwa. Within its territory lay thirteen valleys and more than five hundred temples, shrines, and dwellings, the grounds of which were adorned in the highest style of landscape art. The monks here were numbered by thousands, with whom religious service was a gorgeous ceremonial mockery, and who revelled in luxury, feasted on forbidden viands, drank to inebriety, and indulged in every form of licentiousness. They used their influence in rousing the clans to war, from which they hoped to draw new spoils for their unrighteous enjoyments, while screening themselves from danger behind the cloak of the priesthood. It was against this monastery that the wrath of Nobunaga was most strongly aroused. Marching against it in 1571, he bade his generals set it on fire. The officers stood aghast at the order, which seemed to them likely to call down the vengeance of Heaven upon their heads. With earnest protests they begged him not to do so unholy an act. "Since this monastery was built, now nearly a thousand years ago," they said, "it has been vigilant against the power of the spirits of evil. No one has dared in all that time to lift a hand against these holy buildings. Can you design to do so?"