法華玄義釋籤 17.58

17.58

次明今經四門又二：初結前生後，次正釋四門所以。今經四門文相不委悉者，以今經正意在於開顯，但略示四相；若依門觀利者，隨一句一偈咸皆發真中。下之人事須具如《中論》廣述，況復此中且為分別與諸教異，門中觀法具如《止觀》，何但此中文略。如前三教亦並指他經，文相可見。

Next, explaining the four gates of the present sūtra also has two parts: first, concluding the preceding to introduce the following; second, properly explaining the reason for the four gates. That the textual characteristics of the four gates in the present sūtra are not detailed is because the primary intention of the present sūtra lies in opening and revealing, only briefly showing the four characteristics; if one relies on the contemplation of the gates, those of sharp faculties will all realize the true upon any single line or single verse. For people of lower capacity, it must be fully expounded as in the Madhyamaka-śāstra; how much more so here, where it is merely differentiated to show how it differs from the various teachings; the contemplation methods within the gates are fully present as in the Zhiguan, so why should only the text here be brief? As with the previous three teachings, other sūtras are also indicated together, as can be seen from the textual features.