Phineas Parkhurst Quimby

What is Disease?

What is disease? It is what follows the effect of a false direction given to the mind (or spiritual matter). The body is composed of matter, not mind. But when agitated, that part which is called “heat” and is thrown off is mind (or spirit). It is not intelligence, but a medium to be used according to the direction given it by a power independent of itself - like that direction given to mechanical power. The effect of this direction - call it what you please - on the body, is to destroy itself; for its life is its own destruction.

The curing of disease must be governed by a law. Sin (or death) is the transgression of that law - and when there is no law, there is no transgression.