和訳お願い致します。
The host of reflex actions is arrayed against the proposition, and, in view of such non-mental, though apparently intentional adjustments, we find the necessity for some test of the choice- element as real or fictitious. The only test we have is to ask whether the adjustments displayed are invariably the same under the same circumstances of stimulation. The only distinction between adjustive movements due to reflex action, and adjustive movements accompanied by mental perception, consists in the former depending on inherited mechanisms within the nervous system being so constructed as to effect particular adjustive movements in responso to particular stimulations, while the latter are independent of any such inherited adjustment of special mechanisms to the exigencies of special circumstances. Reflex actions, under the influence of their appropriate stimuli, may be compared to the actions of a machine under the manipulations of an operator : when certain springs of action are touched by certain stimuli, the whole machine is thrown into appropriate action ; there is no room for choice, there is no room for uncertainty ; but, as surely as any of these inherited mechanisms is affected by the stimulus with reference to which it has been constructed to act, so surely will it act in precisely the same, way as it always has acted. But the case with conscious mental adjust ment is quite different. For, without going into the question concerning the relation of Body and Mind, or waiting to ask whether cases of mental adjustment are not really quite as mechanical in the sense of being the necessary result or correlative of a chain of psychical sequences due to a physical stimulation, it is enough to point to the variable and incalcu lable character of mental adjustments as distinguished from the constant and foreseeable character of reflex adjustments.All in fact, that in an objective sense we can mean by a mental adjustment, is an adjustment of a kind that has not been definitely fixed by heredity as the only adjustment possible in the given circumstances of stimulation. For, were there no alternative of adjustment, the case, in an animal at least, would be indistinguishable from one of reflex action.
