妙法蓮華經玄義 2.159

2.159

幻有、無為俗，不有不無為真者：有、無二故為俗；中道不有、不無，不二為真。二乘聞此真、俗，俱皆不解，故如瘂、如聾。《大經》云：「我與彌勒共論世諦，五百聲聞謂說真諦。」即此意也。約此，亦有隨情、情智、智等（云云）。

As for illusory existence and non-existence being the conventional, and neither existence nor non-existence being the real: existence and non-existence being dual constitutes the conventional; the Middle Way being neither existence nor non-existence and non-dual constitutes the real. When the two vehicles hear of this real and conventional, they fail to understand either, and are thus like mutes and the deaf. The Mahāparinirvāṇa-sūtra says: 'When Maitreya and I discussed the conventional truth, the five hundred śrāvakas thought we were speaking of the ultimate truth.' This is precisely the meaning. With respect to this, there are also [the meanings of] according with sentiment, according with sentiment-and-wisdom, [according with wisdom,] and so on.