[11] This material prism is to be understood to apply to language; and in this view Newton himself surveyed the question. "For all language as applied to God, is taken from the affairs of men, by some resemblance, not indeed a perfect one, but yet existing to a certain degree."—Newton's Works, edit. Horsley, vol. iv. p. 430.
ON WILL OR VOLITION.
In the consideration of the nature and offices of the human mind, there is no subject of higher importance than the will, or volition. Every person must have observed, that he is capable of performing certain motions, which he is able to commence, to continue, and to arrest; and the same faculty is possessed by many animals. A slight degree of information will also instruct him, that there are certain motions of his animal frame, over which he has no immediate control. The motions which he is able to direct and regulate, have been termed voluntary; and those over which he possesses no influence or command, have been denominated involuntary motions. The most perfect instances of the latter are the pulsations of the heart, and the movements of the intestines, usually called peristaltic. The curiosity which is natural to man as an intelligent being, would of course prompt him to enquire into the cause of these phenomena, although the result of his investigations might be inadequate to the toil of his research: for, he would be as much puzzled to account for the influence by which certain muscles are moved at will, as he would at others which possess a determinate motion, and are not subject to this direction. While man continues in a healthy state, he is enabled to move at pleasure those muscles or instruments of motion which are subject to his will; and the involuntary muscles continue duly to perform their appropriate office; but in certain morbid states it sometimes occurs, that the exertion of the will to move a leg or arm is ineffectually directed, and however much we desire, wish, or will such motion, these limbs are disobedient.[12] This condition of the members has been termed paralytic: the will to move remains perfect; but the organs to be acted on are insensible to that influence which, in a sound state, excited them to motion. As in the healthy state the will has the power to produce motion, so it is also competent to prevent it; therefore to move or to abstain from motion, are equally the dictates of the will. But it not unfrequently happens, when we intend to thread a needle, to write our name, or to perform some surgical operation, that the will exerts all its influence to keep the hand steady for the due performance of these necessary acts; yet, notwithstanding these implicit commands, the hand continues to move in all directions, but those which could accomplish the object. So, that these muscles, ordinarily voluntary, become, in a certain degree, converted into involuntary muscles. A higher degree of this state prevails in the affection called St. Vitus' Dance, and likewise in some convulsive symptoms attendant on locked jaw, where the body is drawn with incredible violence. It may be noticed, that these states are attended with consciousness.
Concerning the nature of this influence, termed the will, a great variety of discordant opinions prevail. To enumerate or refute these would be unprofitable labour, more especially as the majority are the mere assumptions of their particular authors. They all, however, seem to be agreed that the will is an inherent faculty, or component part of the mind; and some are induced to consider it as holding the highest office in the department of intellect. The only mode of investigating this subject satisfactorily, according to my own views, is to trace the progress of volition from its feeble commencement, to the full exercise of its important function,—from the dawn to the meridian.
As a general observation, it may be remarked that the same influence of the will, which directs the movements of the body, is likewise exerted over the faculties of the mind; although generally in an inferior degree, both from the greater difficulty and less importance of the latter, for the ordinary purposes of life. When we observe the newly-born infant,—that helpless mass of animation,—we perceive no indications to induce us to conclude, that it possesses a voluntary power of directing its movements.[13] It is furnished with the organs of motion, but is unable to exert that influence which manifests direction; yet its involuntary motions continue perfect, and these, as will be subsequently explained, may be considered in their nature and effects as very similar to that, which, in animals, is termed instinct. In the progress of this enquiry, it will be seen that some degree of mental advancement must have been made, before the infant can direct any of the motions of its body; because direction implies knowledge to an extent sufficient for the purposes of command, and also a consciousness of the effort. In the infant, all the organs of sense by degrees become awaked by their appropriate stimuli or objects, and perception is the result. Although we have no memory of our earliest perceptions, which are solely produced by the excitation of external objects, without any direction of the will; yet from the mental indications of the infant, these perceptions would seem to be confused and indistinct. It is some time before the eye appears to notice, and longer before the hand can grasp and manipulate the substances within its reach: in this state, volition would be superfluous if it were possessed. By slow gradations, we find the child capable of directing its eye, of listening to sounds, and of examining by the touch; and these imply the efforts of the will, which appear to be subsequent to perception. As we advance in knowledge, our perceptions, which are the sources of intelligence, are principally acquired by the agency of volition, which directs the organ to the object, but we still continue to be acted on involuntarily by forcible impressions, or striking phenomena.
Previously to the acquirement of language, perception, memory, and volition are in their simplest state, such as we observe in animals, and as in them, we are only able to estimate the amount of their mental possessions, from the intellectual phenomena they display. In the infant, the separate and combined examination of objects by the eye and touch are the circumstances most deserving of notice.
It may here be proper to explain why these earliest of our perceptions are never remembered in after-life. The long period of human infancy, is a powerful argument for the superiority of our species: the mind of man is built up by his own exertions, and his progress is in the ratio of his experience to his capacity: his mission is more important, and consequently requires a longer period to fulfil: he has few instincts; and the sum of his knowledge is the elaboration of his extended endowments. To have remembered the confused dawnings of his perceptions, the imperfect and obscure transmissions of his unpractised organs would have been superfluous, and the sources of error. In this early state, there is no medium by which his perceptions can be artificially connected; nor do they admit of communication or record. When language is acquired, our perceptions become "doubly armed," and impress the memory with additional effect: the employment of the term as the representative of the object, recalls the original perception, and thus invests the mental phantasm with "a local habitation and a name." Thus our earliest recollections are never anterior to a certain progress in the art of speech.
As we possess the instruments of motion in our muscles, they would have been useless without the performance of their function, and our bodies would have been stationary. It is also equally evident that this office must be performed by ourselves, or fulfilled by others. It has been already pointed out that there are certain motions, essential to the preservation of our animal system, termed involuntary, which do not originate from ourselves, but are the directions of a superior power, and are effected independently of our experience and control: the other motions, that have been termed voluntary, are the result of acquirement or practice, and have been gradually formed by our exertions. The reader will now be prepared to understand the wisdom of this arrangement, which, in a future chapter, will be more copiously treated; and to feel that the superiority of man, as an intellectual being, and a responsible agent, consists in the formation of his own mind, and in the direction of his thoughts and actions.