Mental quackery rests on the same platform as all other quackery. The chief plank in this platform is the doctrine that Science has two principles in partnership, one good and the other evil, - one spiritual, the other material, - and that these two may be simultaneously at work on the sick. This theory is supposed to favor practice from both a mental and a material standpoint. Another plank in the platform is this, that error will finally have the same effect as truth.

topic 39 - ending page 458