四明十義書 2.221

2.221

且三法一妙，最是自行果德所證圓極之理也。故云三軌者，即一大乘法。十方諦求，更無餘乘。亦名第一義諦，亦名第一義空，亦名如來藏。此三不定三，三而論一。一不定一，一而論三。不可思議，不並不別，伊字天目。乃將此三一不可思議絕妙之理，貫通十種三法，而一一三法皆從凡夫一念心性約六即辨至極果也。

Furthermore, the single subtlety of the threefold dharma is most supremely the perfectly ultimate principle realized through the fruit-virtue of one's own practice. Therefore it says that the three tracks are the one single Great Vehicle dharma. Seeking through the ten directions, there is no other vehicle. It is also called the Supreme Truth, the Supreme Emptiness, and the tathāgatagarbha. These three are not definitively three, for they are discussed as one while being three; this one is not definitively one, for it is discussed as three while being one. It is inconceivable, neither juxtaposed nor separate, like the letter 'I' and the three eyes of Heaven. Thus, taking this inconceivable, supremely wondrous principle of three and one, he interfused the ten kinds of threefold dharmas, and each and every threefold dharma is delineated from the single thought-moment of the ordinary person's mind-nature across the six identities up to the ultimate fruit.