俱舍論疏 22.91

22.91

On the Śāstra's statement, "Because in all worldly realms... the reasoning of lacking reality is established": This explains the reason why it was spoken with a specific intention. Because in all worldly realms pleasure is little and suffering is much, yet they consider it entirely pleasure, it is therefore called perversion. It is not that when there is entirely no pleasure, considering it pleasure constitutes perversion. The realms of existence also, because pleasure is little and suffering is much, exclusively consider them pleasure, which is called perversion.