We shall be told, however, that whatever flaws there may be in the theory of Christian Science, this cult could not possibly have obtained its vogue if it were all promise and no performance; and as a matter of fact, testimonies to the curative effect of the treatment abound, furnished by those who say they have been restored to health by these methods, and as convincing as such testimony can be. We use the latter phrase advisedly; it is impossible to read these documents without being convinced of the entire good faith of the writers in relating what they themselves believe to be true; it is impossible not to be convinced by the perusal of their accounts that cures of some sort took place: the one thing of which it is possible to remain quite unconvinced is the fundamental contention of Christian Science, _viz._, that there was no disease to be cured. Speaking quite generally, if one is going to be impressed by testimonials there is of course, no patent pill of respectable advertising power which cannot produce such by the wastepaper-basketful; and perfectly sincere and unsolicited testimonials, too. What these prove, however, is neither that the patients have been cured of the particular diseases they may name--and in the diagnosis of which they may very likely be mistaken--nor above all that it is the taking of a particular preparation to which they owe their cures; they prove the enormous power of suggestion and auto-suggestion, in {130} virtue of which many ailments yield to the patient's firm assurance that by following a certain course he will get better. Everyone knows that a manner which inspires confidence, a happy blend of cheerfulness and suave authority, is of at least equal value to a physician as his skill and diplomas; and it is probably true, approximately at any rate, that a man can no more be cured of a serious illness unless he believes in his curability, than he can be hypnotised against his will. But between the recognition of such a fact, and the description of a cancer as an obstinate illusion, or a crushed limb as an "error of thought," there is just the difference which separates sanity from extravaganza.