De la suggestion (Suggestive Therapeutics)

Suggestive Therapeutics is the foundational statement of the Nancy School's account of hypnosis, advancing the claim that hypnotic phenomena are not a pathological condition but an intensification of an ordinary human capacity: suggestibility. There is no hypnotic fluid and no occult force, and the subject need not be diseased; suggestion operates, in varying degree, on virtually everyone.

The argument proceeds by detaching the therapeutic mechanism from the trance itself. The real agent of change is suggestion, which can be delivered in the waking state as well as under hypnosis, and the work positions this psychological theory in direct opposition to Charcot's view at the Salpêtrière, which treated hypnosis as peculiar to hysterics.

Its significance lies in completing the demystification of hypnotism begun by Braid and reframing the whole field as applied psychology. By making suggestion a normal faculty everyone possesses, it opens the path to auto-suggestion and stands as a direct precursor to Coué's method and to modern conceptions of self-talk.