大方廣佛華嚴經疏 34.28

34.28

第三「然諸」下彼二顛倒觀。妄苦本空得而不覺，真樂本有失而不知，而遠樂就苦，名彼二顛倒。上來三觀為方便竟。

Third, from 'Yet all [sentient beings]' onward is the contemplation of those two inversions. Delusory suffering is fundamentally empty, yet encountering it, they are unaware; true joy is fundamentally present, yet losing it, they do not know. Thus, distancing themselves from joy and running toward suffering is called 'those two inversions'. The preceding section on the three contemplations as expedient means is concluded.