Since the chief aim of this study is to prove that the basis of invention must be sought in motor manifestations, I shall not hesitate to dwell on it, and I take the subject up again under another, clearer, more precise, and more psychological form, in putting the following question: Which one among the various modes of mind-activity offers the closest analogy to the creative imagination? I unhesitatingly answer, _voluntary activity_: Imagination, in the intellectual order, is the equivalent of will in the realm of movements. Let us justify this comparison by some proof.
1. Likeness of development in the two instances. Growth of voluntary control is progressive, slow, crossed and checked. The individual has to become master of his muscles and by their agency extend his sway over other things. Reflexes, instinctive movements, and movements expressive of emotion constitute the primary material of voluntary movements. The will has no movements of its own as an inheritance: it must coördinate and associate, since it separates in order to form new associations. It reigns by right of conquest, not by right of birth. In like manner, the creative imagination does not rise completely armed. Its raw materials are images, which here correspond to muscular movements. It goes through a period of trial. It always is, at the start (for reasons indicated later on), an imitation; it attains its complex forms only through a process of growth.
2. But this first comparison does not go to the bottom of the matter; there are yet deeper analogies. First, the completely subjective character of both instances. The imagination is subjective, personal, anthropocentric; its movement is from within outwards toward an objectification. The understanding, i.e., the intellect in the restricted sense, has opposite characteristics--it is objective, impersonal, receives from outside. For the creative imagination the inner world is the regulator; there is a preponderance of the inner over the outer. For the understanding, the outside world is the regulator; there is a preponderance of the outer over the inner. The world of my imagination is _my_ world as opposed to the world of my understanding, which is the world of all my fellow creatures. On the other hand, as regards the will, we might repeat exactly, word for word, what we have just said of the imagination. This is unnecessary. Back of both, then, we have our true cause, whatever may be our opinion concerning the ultimate nature of causation and of will.
