The hypothesis then breaks down, and we are forced back to our original supposition, namely, that those actions which are voluntary originally, never cease to be so; that when, as in the cases supposed, we retain no recollection of particular volitions, it is because of some law of our nature by which we are capable of recollecting only those acts upon which the attention has been fixed with a certain degree of intensity and for some perceptible space of time; that the volition, in other words, is too feeble and too rapid to leave any impression on the memory. To argue that there has been no volition, because we do not recollect it, is as absurd as it would be to say that there has been no muscular act, because in many cases we have as little recollection of the muscular act, as we have of the antecedent volition.
Besides, there are many other mental acts, as rapid as those which have been adduced,—so rapid that not the least recollection of them remains,—where, yet, this mechanical or automatic hypothesis affords not the least explanation. Thus the expert accountant in a Bank adds up a long column of figures with the same rapidity and ease with which ordinary persons would read a passage from a familiar author, and he brings out in the end the exact sum, which he can do in no other way than by taking note in passing of the precise character and value of each figure. Yet, at the end of such a process, the accountant has no more recollection of those rapidly succeeding acts of the mind, than has the musical performer of those countless volitions put forth in the course of a piece of brilliant musical instrumentation.
As to the objection, that the theory attributes an almost inconceivable rapidity to some of our mental operations, it may be answered, in the first place, that there is no reason, surely, why mind should not be capable of as rapid action as its handmaid, matter; and, in the second place, that our ideas of time are relative, quite as much as our ideas of space; and if the microscope has revealed a world of wonders too minute in point of space to be observed by the naked eye, in whose existence we yet believe with undoubting confidence, we may without greater difficulty believe in the existence of mental acts crowded into so narrow a point of time, so rapid and transitory in their occurrence, as to leave no impression upon the memory.
The facts which have been adduced, then, teach clearly two things: first, that by far the greatest part of what we do and experience and are necessarily conscious of at the time of their occurrence, immediately fade from the recollection, as shadows pass over a landscape; and secondly, that in order to the recollection of any act or object, it is necessary that the mind be fixed upon it for some perceptible space of time and with some sensible degree of attention. It is this indissoluble connection of the attention with memory, this absolute dependence of the latter upon the former, which gives the subject such far-reaching import in considering the means of intellectual culture.
How it is that we are able to exclude all subjects but one from the thoughts, is not very easy of explanation. It is obvious that we cannot do it by direct volition. The very fact of our willing not to attend to a particular object, fixes our attention upon it. That we have, however, some power and agency in fixing our attention on one object and in withdrawing it from another, is a fact within the knowledge and experience of every one, whether we can explain the mode by which it is done or not. We have the power of what the chemists call "elective affinity;" we make our choice of some one of the various objects claiming the attention, and fix it upon that; and it seems to be a law of our nature, that when we thus direct the attention to one object, all others, of themselves, and by some natural necessity, retire from the thoughts. This is as near an approach, probably, as we shall ever make, towards an exact verbal expression of a fact, for an intimate knowledge of which, after all, every man must refer to his own consciousness.
This power of singling out and fastening upon some one object to the exclusion of all others,—in other words, this power of attention—exists in almost infinite degrees in different individuals. The degree in which it exists is the measure of a man's intellectual stature. No man can be truly great who does not possess it to a high degree. To command our attention is to command ourselves, to be truly master of our own powers and resources.
The subject, then, becomes one of first importance in every kind of either mental or moral improvement. Its vital connection with the faculty of memory has been already suggested. Perhaps, however, this branch of the subject should be set forth with a little more distinctness. There are many vague, dreamy notions afloat on the subject of memory, standing comparisons and metaphors, intended to illustrate its uses and magnify its importance, but not declaring with any degree of precision what it is. It is called, for instance, the "storehouse of our ideas." The metaphor conveys undoubtedly a certain amount of truth in regard to the subject. At the same time, there are some important particulars, in which the comparison, for it is nothing more, conveys a wrong impression. Experience teaches us, for instance, that recollections, unlike other articles of store, are from the time of their deposit undergoing a continual process of decay, and if they do not fade entirely from the mind, it is because we occasionally bring them anew under the review of the mind, and thus restore them to their original freshness and vigor.
Dismissing, therefore, the metaphor, I shall, I presume, express with sufficient accuracy the established doctrine on this subject by the following statements: that of the great multitude of mental operations which we experience, by far the larger part perish at the moment of their birth; that others, to which for any reason we give, at the time of their occurrence, some sufficient degree of attention, afterwards recur to us, or are in some way present to our thoughts; that this recurrence of former ideas to our thoughts is sometimes spontaneous, without any voluntary action on our part, and sometimes the consequence of a direct effort of the will; and lastly, that the capacity which we have of being thus revisited by former thoughts is called memory, while the thoughts themselves, which thus return, are called memories, or more commonly recollections.
How it is that by an act of volition we can summon again into the mind an idea which has formerly been present, and which is now absent, we have the same difficulty in explaining which we had in explaining how, by an act of volition, we can banish a thought which is now present, or by the power of attention can detain some one thought to the exclusion of all others. To think what particular thing it is that we wish to remember, is in fact to have remembered it already. It is an obstruse and difficult inquiry, into which it is not necessary now to enter. A more important inquiry, and one connected directly with our present theme, relates to the different kinds of memory, and their connection severally with the faculty of attention.
Quickness of memory is that quality which is most easily developed, especially in young persons. It is also its most showy quality, and the temptation to give it an inordinate development is strong. The habit of getting things by rote, is easily acquired by practice. It is astonishing what masses of Scripture texts young children will get by heart, when under some special stimulus of reward or display. I have often refused to publish marvellous feats of this kind, not because I thought the accounts incredible, (unfortunately, they were too true,) but because I thought they were a species of mental excess, and they should no more be encouraged than bodily excesses. A little girl in my own Sunday-School once actually committed to memory the whole of the Westminster Assembly's Shorter Catechism in three days! Six months afterwards she hardly knew a word of it. It had been a regular mental debauch. A few more such atrocities would have made her an idiot. College records tell us of what are called "crammed men," that is, men who literally stuff themselves with knowledge in order to pass a particular examination, or to gain a particular honor, and who afterwards forget their knowledge, as fast as they have acquired it. There is a well authenticated instance of a student who actually learned the six books of Euclid by heart, though he could not tell the difference between an angle and a triangle. The memory of such men is quickened like that of the parrot. They learn purely by rote. Real mental attention, the true digester of knowledge, is never roused. The knowledge which they gorge, is never truly assimilated and made their own.