妙法蓮華經玄義 8.108

8.108

隨此四根故四門異說，說異故名異，功別故義異，悟理不殊，體終是一。故求那跋摩云：「諸論各異端，修行理無二，偏執有是非，達者無違諍。」故四隨殊唱，是一實之異名耳。

Because of these four faculties, there are different expositions in the four gates: because the expositions differ, the names differ; because the functions are distinct, the meanings differ; yet the principle awakened to is not different, and the substance is ultimately one. Therefore Guṇavarman said: 'The treatises each have different viewpoints, but the principle of practice is without duality; when biased attachments arise, there are right and wrong, but those who have comprehended have neither conflict nor dispute.' Therefore, the distinct proclamations according to the four [modes of teaching] in accordance with [the audience] are merely different names for the one real [substance].