說無垢稱經疏 3.156

3.156

贊曰：空理義云，俗有言語，故有文字；真言語斷，故無文字。俗有思慮，如水波浪汎濫而起，故有譬說。真離慮思，故無譬說。應理義云：真如言斷，故無文字。真如離俗波浪思故，無譬說也。舊曰「法無言說，離覺觀故」，波浪思等即覺觀故。

Commentary: According to the principle of emptiness: the conventional has speech, and therefore has letters; the ultimate cuts off speech, and therefore is without letters. The conventional has deliberation, rising like surging waves of water, and therefore has metaphorical expressions. The ultimate is free from deliberation, and therefore has no metaphorical expressions. According to the principle of the reasonable: in tathatā speech is cut off, so it is without letters. Because tathatā is free from conventional surging thoughts, it has no metaphorical expressions. The older text said ‘the Dharma is without speech, because it is free from vitarka and vicāra’; surging thoughts and the like are precisely vitarka and vicāra.