成唯識論述記 2.700

2.700

述曰：謂第七識恒審思量，此說「恒」言簡第六識，意識雖審思而非是恒，有間斷故。次「審思」言，復簡第八，第八雖恒，非審思故。「恒」、「審思量」，雙簡五識，彼非恒起，非審思故。若言此識實內思量，何故此中不言內者？通無漏說，佛此亦緣外境相故。此「恒」等言，各有所簡，如《樞要》說。

The Commentary states: This means that the seventh consciousness constantly and reflectively cogitates. Stating "constantly" here excludes the sixth consciousness: although the mental consciousness reflectively cogitates, it is not constant, because it has interruptions. Next, the words "reflectively cogitates" further exclude the eighth: although the eighth is constant, it is not reflective cogitation. "Constantly and reflectively cogitates" jointly excludes the five consciousnesses, for they do not arise constantly and are not reflective cogitation. If one asks, "Since this consciousness actually cogitates internally, why does it not state 'internal' here?", it is because the explanation includes the undefiled state, for the Buddha's [seventh consciousness] also takes external objective aspects as objects. These words such as "constantly" each have what they exclude, as explained in the *Cheng weishi lun shuyao*.