Commentary

If one keeps all the distorted dream-thinking, wishful-thinking, false thing and erroneous views, one will reach the state of Final Nirvana.

Layman has Four Distorted Thinking:

1. Regard the impure body as pure
2. Regard the suffering sensation as happy
3. Regard the impermanent mind as permanent
4. Regard the "not-self" Dharma as self

Arhat also has Four Distorted Thinking:

1. Attach to impureness, but no not envisage pureness of Dharma-body
2. Attach to suffering, but do not envisage the happiness of Ultimate Nirvana
3. Attach to "not-self" Dharma, but do not envisage the "liberated self"
4. Attach to impermanence, but do not envisage the permanence of Buddha's nature

Bodhisattva practices the Profound Prajna-paramita, keeping all the distorted thinking, thus certifies the Ultimate Nirvana, which is the final and perfect stillness.