AN 4.49
PTS: A ii 52
Vipallasa Sutta: Perversions
translated from the Pali by
Thanissaro Bhikkhu
Alternate translation: Olendzki (excerpt)

"Monks, there are these four perversions of perception, perversions of mind, perversions of view. Which four? 'Constant' with regard to the inconstant is a perversion of perception, a perversion of mind, a perversion of view. 'Pleasant' with regard to the stressful... 'Self' with regard to not-self... 'Attractive' with regard to the unattractive is a perversion of perception, a perversion of mind, a perversion of view. These are the four perversions of perception, perversions of mind, perversions of view.

"There are these four non-perversions of perception, non-perversions of mind, non-perversions of view. Which four? 'Inconstant' with regard to the inconstant is a non-perversion of perception, a non-perversion of mind, a non-perversion of view. 'Stressful' with regard to the stressful... 'Not-self' with regard to not-self... 'Unattractive' with regard to the unattractive is a non-perversion of perception, a non-perversion of mind, a non-perversion of view. These are the four non-perversions of perception, non-perversions of mind, non-perversions of view."

Perceiving constancy in the inconstant, pleasure in the stressful, self in what's not-self, attractiveness in the unattractive, beings, destroyed by wrong-view, go mad, out of their minds. Bound to Mara's yoke, from the yoke they find no rest. Beings go on to the wandering-on, leading to birth & death. But when Awakened Ones arise in the world, bringing light to the world, they proclaim the Dhamma leading to the stilling of stress. When those with discernment listen, they regain their senses, seeing the inconstant as inconstant, the stressful as stressful, what's not-self as not-self, the unattractive as unattractive. Undertaking right view, they transcend all stress & suffering.