Perception -Words used in A Course in Miracles

  Perception is the idea that we can be separate, and thus perceive everything as being different from that which sees.

The ability to perceive made the body possible, because you must perceive something and with something. That is why perception involves an exchange or translation, which knowledge does not need. The interpretative function of perception, a distorted form of creation, then permits you to interpret the body as yourself in an attempt to escape from the conflict you have induced. T-3.IV.6:1-3.

Perception always involves some misuse of mind, because it brings the mind into areas of uncertainty. The mind is very active. When it chooses to be separated it chooses to perceive. Until then it wills only to know. T-3.IV.5:1-4. 

Knowledge is not the remedy for false perception since, being another level, they can never meet. The one correction possible for false perception must be true perception. It will not endure. But for the time it lasts it comes to heal. For true perception is a remedy with many names. Forgiveness, salvation, Atonement, true perception, all are one.             C-4.31-6.1-6

What happens to perceptions if there are no judgments and nothing but perfect equality? Perception becomes impossible. Truth can only be known. All of it is equally true, and knowing any part of it is to know all of it. Only perception involves partial awareness. Knowledge transcends the laws governing perception, because partial knowledge is impossible. It is all one and has no separate parts.    T-3.V.8:1-7.

As long as perception lasts prayer has a place. Since perception rests on lack, those who perceive have not totally accepted the Atonement and given themselves over to truth. Perception is based on a separated state, so that anyone who perceives at all needs healing. Communion, not prayer, is the natural state of those who know. T-3.V.10:1-4.