"I do not, however, use this method of hypnotism with all patients. It is an error to state, as some specialists do, that from their formula there can be no deviation; because, as no two minds are constituted alike, so they cannot be affected alike. While one will yield by intense will exerted through my eyes, another may, by the same means, become fretful, timid,nervous, and more wakeful than he was before. The same rule applies to gesture, tones of the voice, and mesmeric passes. That which has a soothing and lulling effect on one, may have an opposite effect on another."
"There can be no unvarying rule applicable to all patients. The means must be left to the judgment of the operator, who by a long course of psychological training should be able to judge what measures are necessary to obtain control of his subject. Just as in drugs, one person may take a dose without injury that will kill another, so in hypnosis,one person can be put into a deep sleep by means that would be totally ineffectual in another, and even then the mental states differ in each individual--that which in one induces a gentle slumber may plunge his neighbor into a deep cataleptic state."
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