Q: What is mindfulness concerning four objects and four warped views?

A: Mindfulness concerning four objects refers to that concerning the body, sensation, mind, and dharmas. The four warped views are those of permanence, pleasure, selfhood, and purity.

Q: What is the purpose of contemplation that involves mindfulness of these four objects?

A: To contemplate the impurity of the body, the lack of pleasure in sensations, the transiency of the mind, and the non-substantiality of dharmas.

Q: Why are the warped views identified as those of permanence, pleasure, selfhood, and purity?

A: It is because ordinary people cling to permanence, pleasure, selfhood, and purity with regard to the impure and so forth.
Q: Are the four objects of which one is mindful and the five aggregates the same or different?

A: The terms are different, but the meaning is the same.

Q: What do you mean [when you say] that their meaning is the same?

A: The body corresponds to the aggregate of form. Sensations correspond to the aggregate of sensation. The mind corresponds to the aggregate of consciousness. Dharmas correspond to the two aggregates of conceptions and volitional activities.