佛祖統紀 29.30

29.30

Master [Śīla]bhadra's teaching of the three periods established doctrines that were broad and loose; how could they suffice to encompass the scriptures of the Buddha's entire lifetime? The Xuanzan composed by Ci'en was deficient in contemplating the mind; how could it suffice to penetrate the scripture of the One Real? Those who excuse them say: 'These were intended for a particular capacity.' When Tiantai arose, the three schools of the south and seven schools of the north had their traces wiped away by it. How could Ci'en be permitted to rise up suddenly after the four seas had long been pacified? This must be critiqued. I have therefore written the Record of the Ci'en School and Doctrine.