妙法蓮華經玄義 3.132

3.132

五、對一諦明智者，即是如實智也。《釋論》云：「諸水入海，同一鹹味。諸智入如實智，失本名字。」故知如實智總攝一切智，純照一境，故總眾水俱成一鹹也。若待十智為麁，如實智為妙。若待諸實智，諸實智名麁，中道如實智名妙。若開麁顯妙者，非但諸實智為妙，十智亦名妙（云云）。

Fifth, clarifying wisdom in correlation with the single truth: this is precisely wisdom as it truly is (yathābhūtajñāna). The Mahāprajñāpāramitopadeśa says: 'When all waters enter the ocean, they share the same salty flavor. When all wisdoms enter the wisdom as it truly is, they lose their original names.' Therefore we know that the wisdom as it truly is comprehensively gathers all wisdoms and purely illuminates a single object; hence gathering all waters, they all become a single saltiness. If contrasted [with other wisdoms], the ten wisdoms are coarse, and the wisdom as it truly is is wondrous. If contrasted with the various real wisdoms, the various real wisdoms are called coarse, and the wisdom as it truly is of the middle way is called wondrous. If one opens the coarse to reveal the wondrous, not only are the various real wisdoms wondrous, but the ten wisdoms are also called wondrous (and so forth).