“Projection makes perception. The world you see is what you gave it, nothing more than that. But though it is no more than that, it is not less. Therefore, to you it is important. It is the witness to your state of mind, the outside picture of an inward condition. As a man thinketh, so does he perceive.”ACIM, 21: Intro: 1
The mind has to identify with the body in order for the body to exist, just like, in quantum physics, light becomes a particle, a photon only when it is conceived then observed. And what makes the body sick if not the extent to which we make this identification real?