With the colour of the rose, the size and figure of the rose,—which are the predominant ideas,—I associate the idea of that modification of hardness and softness, which belongs to the rose; its degree of resistance, in short; also its smell, and its taste. These associations have been formed, as other associations are, by repetition. I have had so uniformly the sight, along with the handling, these, along with the smell, and the taste—of the rose, that they are always called up together, and in the closest combination.
349 Now then let us ask, what we mean, when we affirm, that the rose exists. In this meaning are undoubtedly included the above sensations, in a certain order. I see the rose on the garden wall, and I affirm that it exists: that is, along with my present sensation, the sight of the rose, I have the ideas of a certain order of other sensations. These are, first, the idea of distance, that is, the idea of the feelings involved in the act of going to the rose: after this, the idea of the feelings in handling it; then in smelling, then in tasting it; all springing up by association with the sight of the rose. It is said, we believe we should have these sensations. That is, we have the idea of these sensations inseparably united one with the other, and inseparably united with the idea of ourselves as having them. That this alone constitutes belief, in the remarkable case of the association of extension and figure with the sensations of sight, has already been seen; that this alone constitutes it, in many other remarkable cases, will be seen as we proceed; and in no case can it be shewn, that any thing more is included in it.
In my belief, then, of the existence of an object, there is included the belief, that, in such and such circumstances, I should have such and such sensations. Is there any thing more? It will be answered immediately, yes: for that, along with belief in my sensations as the effect, there is belief of something as the cause; and that to the cause, not to the effect, the name object is appropriated.
This is a case of Belief, which deserves the greatest possible attention. It is acknowledged, on all hands, that we know nothing of objects; but the sensations 350 we have from them. There is a cause, however, of those sensations, and to that we give the name object: or, rather, there is a cluster of causes, corresponding with the cluster of sensations. Thus, when I see, and handle, and smell, and taste the rose, there is a cause of the sensation red, a cause of the sensation soft, a cause of the sensation round, a cause of the smell, and a cause of the taste; and all these causes are united in the rose. But what is the rose, beside the colour, the form, and so on? Not knowing what it is, but supposing it to be something, we invent a name to stand for it. We call it a substratum. This substratum, when closely examined, is not distinguishable from Cause. It is the cause of the qualities; that is, the cause of the causes of our sensations. The association, then, is this. To each of the sensations we have from a particular object, we annex in our imagination, a cause; and to these several causes we annex a cause, common to all, and mark it with the name substratum.
This curious case of association we now proceed to develop. The word cause, means the antecedent of a consequent, where the connection is constant. This has been established on such perfect evidence, that it is a received principle of philosophy. More of the evidence of this important principle will appear as we go on. Here we shall take the proposition for granted.
Not only are we, during the whole period of our lives, witnesses of an incessant train of events; that is, of antecedents and consequents, between which, for the greater part, the order is constant; but these constant conjunctions are, of all things in the world, what we are 351 the most deeply interested in observing; for, on the knowledge of them, all our power of obtaining good and avoiding evil depends. From this, it necessarily follows, that between none of our ideas is the association more intimate and intense, than between antecedent and consequent, in the order of events. Whenever we perceive an event, the mind instantly flies to its antecedent. I hear words in the street; event: some one, of course, is making them; antecedent. My house is broken, and my goods are gone; event: a thief has taken them; antecedent. This is that remarkable case of association, in which the combination is inseparable; a case of so much importance in explaining some of the more mysterious phenomena of thought. Other instances of this remarkable phenomenon, to which we have already had occasion to advert, are, the sight of an object, and the ideas of its distance, its extension, and figure; the idea of colour, and the idea of extension; the idea of an object, and the idea of position and unity; the idea of one of my sensations, and the idea of myself. In no instance is this inseparable association more perfect, or its consequences more important, than in that between an event, and its antecedent. We cannot think of the one without thinking of the other. The two ideas are forced upon us at the same time; and by no effort of ours can they be disjoined. So necessarily, from the first moment of experience, are we employed in observing the constant conjunctions of events; and so deeply are we interested, in looking out for, and knowing the constant antecedent of every event, that the association becomes part of our being. The perception, or the idea, of an event, instantly brings up 352 the idea of its constant antecedent; definite and clear, if the antecedent is known; and indefinite and obscure, if it is unknown. Still, the idea of an event, of a change, without the idea of its cause, is impossible. That a cause means, and can mean nothing to the human mind, but constant antecedent, is no longer a point in dispute.[99]
[99] Here again the author takes too sanguine a view of the amount of agreement hitherto attained among metaphysical philosophers. “That a cause means, and can mean, nothing to the human mind but constant antecedent” is so far from being “no longer a point in dispute” that it is denied with vehemence by a large numerical majority of philosophers; and its denial is perhaps the principal badge of one of the two schools which at this, as at most other times, bisect the philosophical world—the intuitional school and the experiential—Ed.
Of this remarkable case of association, that which we call “Our Belief in External Objects” is one of the most remarkable instances. Of the sensations, of sight, of handling, of smell, of taste, which I have from a rose, each is an event; with each of those events, I associate the idea of a constant antecedent, a cause; that cause unknown, but furnished with a name, by which it may be spoken of, namely, quality; the quality of red, the cause of the sensation red; the qualities of consistence, extension and figure, the causes of the sensations of handling; the qualities of smell and taste, the causes of the sensations of smell and taste. Such is one part of the process of association in this case. Another is that by which the ideas of those sensations are so intimately united, as to appear not several ideas, but one idea, the idea of a rose. We have now two steps of association; that 353 of the several sensations into one idea; that of the several sensations each with a separate cause. But we do not stop here; for, as in a train of events, consisting of several links, A, B, C, D, and so on, though C is the antecedent or cause of D, it is itself the consequent or effect of B; and in all cases, when we have found the cause of any particular event, we have still to find out what was the cause of that cause. In this manner, when our habit of association has carried us from our sensations to the causes of them, the same habit carries us still farther.
As each of our sensations must have a cause, to which, as unknown, we give the name quality; so each of those qualities must have a cause. And as the ideas of a number of sensations, concomitant in a certain way, are combined into a single idea; as that of rose, that of apple; the unity, which is thus given to the effects, is of course transferred to the supposed causes, called qualities: they are referred to a common cause. To this supposed cause of supposed causes, we give a name; and that name is the word Substratum.
It is obvious, that there is no reason for stopping at this Substratum; for, as the sensation suggested the quality, the quality the substratum, the substratum as properly leads to another antecedent, another substratum, and so on, from substratum to substratum, without end. These inseparable associations, however, rarely go beyond a single step, hardly ever beyond two. The Barbarian, in accounting for the support of the earth, placed it on the back of a great elephant, and the great elephant on the back of a great tortoise; but neither himself, nor those whom he 354 instructed, were carried by their habits of association any farther.[100]