大乘義章 1.108

1.108

二無我者，一人無我、二法無我。人無我者，經中亦名眾生無我、亦名生空、亦名人無我、亦名人空、亦名我空。眾法成生，故曰眾生。生但假有，無其自性，是故名為眾生無我。眾生性相一切皆無，說之為空，寄用名人。無我與空，義同前釋。性實名我，陰中無我，故曰我空。法無我者，亦名法空。自體名法，法無性實，名法無我。諸法性相一切皆無，名為法空。此即二種，俱名為空，齊號無我。若別分之，空與無我隱顯互彰。若依《毘曇》，陰非是我，名為無我；陰非我所，說之為空。《成實》法中，眾生空者名之為空，法體空者名為無我。故彼論中「觀生空者，名為空行。觀法空者，名無我行。」

As for the two kinds of selflessness: first, the selflessness of persons; second, the selflessness of dharmas. The selflessness of persons is also called in the sūtras 'the selflessness of sentient beings', 'the emptiness of sentient beings', 'the selflessness of persons', 'the emptiness of persons', and 'the emptiness of a self'. Sentient beings are formed by a confluence of dharmas; hence they are called 'sentient beings'. Being exists merely conventionally, lacking its own intrinsic nature; therefore it is called 'the selflessness of sentient beings'. The nature and marks of sentient beings are entirely non-existent; this is spoken of as emptiness, while 'person' is named metaphorically through its function. 'Selfless' and 'empty' have the same meaning as explained before. Real intrinsic nature is called 'self'; there is no self within the aggregates, hence it is called 'emptiness of self'. The selflessness of dharmas is also called 'the emptiness of dharmas'. Intrinsic substance is called 'dharma'; when dharmas lack real intrinsic nature, it is called 'the selflessness of dharmas'. The nature and marks of all dharmas are entirely non-existent; this is called 'the emptiness of dharmas'. These two are thus both called 'emptiness' and equally designated 'selflessness'. If distinguished separately, emptiness and selflessness mutually manifest what is hidden and revealed. According to the Abhidharma, the aggregates not being the self is called 'selflessness'; the aggregates not belonging to the self is spoken of as 'emptiness'. In the Tattvasiddhi doctrine, the emptiness of sentient beings is called 'emptiness', while the emptiness of the substance of dharmas is called 'selflessness'. Hence that treatise states: 'Contemplating the emptiness of sentient beings is called the practice of emptiness. Contemplating the emptiness of dharmas is called the practice of selflessness.'