§ 8. The persistent vitality of Realism is due to its protest against the fallacies of an opposing theory which has of late especially found favour with some distinguished students of natural science, and which we may conveniently call Subjectivism.[[49]] Realism, as we saw, started from the true premisses, that there are real facts of which my experience does not make me explicitly aware, and that my cognition even of my own experience is incomplete, and argued to the false conclusion that there are therefore realities independent of any experience. Subjectivism reasons in the opposite way. It asserts truly that there is no reality outside experience, and then falsely concludes that I can know of no reality except my own cognitive states. Its favourite formula are expressions such as, “We know only the modifications of our own consciousness,” “All we know is our own perceptions,” “Nothing exists but states of consciousness.” These formulæ are not all obviously identical in meaning, but the exponents of Subjectivism seem to use them without any conscious distinction, and we shall probably do the theory no injustice if we criticise it on the assumption that the expressions are meant to be of identical signification.
Now it is clear that the logical consequences of the subjectivist doctrine are so subversive of all the practical assumptions upon which daily life is based, that they should require the most stringent proof before we give our assent to them. If Subjectivism is true, it follows immediately that not merely the “whole choir of heaven and furniture of earth,” but the whole of humanity, so far as I have any knowledge of its existence, is a mere subjective affection of my own “consciousness,” or, as the scientific subjectivist usually, for some not very obvious reason, prefers to say, of my own brain. Every argument which the subjectivist can produce to show that “things” are, for my knowledge at any rate, “modifications of my own consciousness,” applies to the case of my fellow-men with as much force as to the case of the inorganic world. The logical inference from the subjectivist’s premisses, an inference which he is rarely or never willing to draw, would be that he is himself the sole real being in a world of phantoms, not one of which can with any certainty be said to correspond to a real object. And conversely, any valid ground for recognising the existence of my fellow-men as more than “states of my own consciousness,” must equally afford ground for admitting the reality, in the same general sense, of the rest of the world of things familiar to us from the experiences of everyday life.[[50]] For if any one of the things composing the world of practical life has a reality which is not dependent upon its presence to my particular experience, then there is the same reason for believing that every other such thing has a like reality, unless there happen to be special grounds for regarding the perception to which it is present as an hallucination.
We must not, however, simply dismiss the subjectivist theory in this summary way. We must examine the doctrine in detail sufficiently to discover where the fallacy comes in, how it arises, and what modicum of sound philosophic insight it may possibly contain. To take these three points in logical order—
(a) The current arguments for Subjectivism are often so stated as to confuse together two quite distinct positions. When it is said that what we perceive is “our own subjective states,” the meaning intended may be either that there is, at least so far as I am able to know, no real existence in the universe except that of my “states of consciousness”; or again, that there are such realities, but that the properties which I perceive do not belong to them in their own nature but are only subjective effects of their action upon my “consciousness,” or, if you prefer to speak in physiological language upon my nervous system. Now, many of the arguments commonly urged by the subjectivist would at most only prove the second conclusion, in which the subjectivist agrees to a large extent with the scientific realist. Thus it is an ignoratio elenchi to reason as if the facts of hallucination, illusion, and discrepancy between the reports of different percipients or different sense-organs of the same percipient gave any support to the special doctrine of Subjectivism. These facts, which, as we have seen, are equally appealed to by scientific realists, prove no more than that we do not always perceive the world of things as it is, and as it must be thought of if we would think truly,—in other words, that there is such a thing as error.
Now the problem “How is it possible for us to think or perceive falsely?” is, as the student of Greek philosophy knows, both difficult and important. But the existence of error in no way shows that the things which I perceive are “states of my own consciousness”; on the contrary, error is harder to explain on the subjectivist theory than on any other. For if what I perceive has some kind of existence distinct from the mere fact of my perceiving it, there is at least a possibility of understanding how the reality and my perception of it may be discrepant; but if the existence of a thing is only another name for the fact that I perceive it, it seems impossible that I should perceive anything except as it is. On the subjectivist theory, as Plato showed in the Theaetetus, every percipient being ought, at every moment of his existence, to be infallible.
We may confine our attention, then, to the grounds which the subjectivist alleges for the former conclusion, that nothing can be known to exist except my own “states of consciousness,” and may dismiss the whole problem of erroneous perception as irrelevant to the question. Now the general argument for Subjectivism, however differently it may be stated by different writers, consists, in principle, of a single allegation. It is alleged as a fact in the Psychology of cognition, that things are immediately perceived by us as modifications of our own sensibility, or “states of our own consciousness,” and that it is therefore impossible to get behind this ultimate condition of all perception. Against this psychological doctrine we have to urge (1) that it is in flagrant contradiction with the certain facts of actual life; and (2) that, as a doctrine in Psychology, it is demonstrably false.
(1) There are certain realities, admitted by the subjectivist himself, which are manifestly not “states of my consciousness,” and of which I yet, as the subjectivist himself admits, have a genuine though imperfect knowledge; such realities are, e.g., the ends and purposes of my fellow-men, and again many of my own ends and purposes. It is allowed on all hands that I can know not only the fact of the existence of other men, but also, to some extent at least, the character of their various purposes and interests. This is involved, for instance, in the simple fact that when I read a letter it is normally possible for me to understand the writer’s meaning. It is equally involved in the fact that I can know the truth of any ordinary historical matter of fact, e.g., the date of the great fire of London. Neither the date of the fire of London nor the meaning of my correspondent’s sentences is a “state of my consciousness” in any intelligible sense of the words, yet both are typical instances of the kind of facts of which our ordinary knowledge of the world of everyday life and practice wholly consists. And what is true of facts relating to the deeds and purposes of others is equally true of my own deeds and purposes. The facts which make up my own life cannot, without violence to language, be reduced to “states of my consciousness.” For instance, I may know that I have a certain temperament or disposition, e.g., that I am irascible by temperament or of a sentimental disposition; but though my knowing these truths about myself may in a sense be called a state of my consciousness, the truths themselves cannot be called “states of my consciousness” without a serious logical fallacy of equivocal middle term.
(2) This will be made clearer by a consideration of the psychological principle invoked by the subjectivist. What the subjectivist means when he says that in perception I am aware only of the states, or subjective modifications, of my own consciousness, is that the object of which each perceptive state is aware is simply itself as a perceptive state; the perception perceives itself and nothing else. E.g., when I say I see red, what I am really aware of is that I am in a state of perceiving red; when I say I hear a noise, what I am aware of is that I am in a state of hearing a noise, and so universally. Now this is so far from being a truth, that it is absolutely and demonstrably false. We may, in fact, definitely lay it down that the one thing of which no one, except the introspective psychologist, is ever aware is his own perceptive state in the act of perceiving, and that, even in the case of the psychologist who sets himself purposely to study his own states, no perceptive state ever perceives itself. What I am aware of when I look at a red surface is not “myself-as-perceiving-red,” but the splash of red colour itself. When I see a man, I do not perceive “myself-as-seeing-a-man,” but I perceive the other man. So when I take a resolution to act in a certain way or realise that I am in a certain mood, what I am directly aware of is not “myself-as-forming-the-resolution” or “myself-as-in-the-mood,” but the resolution or the mood. Even when, as an introspective psychologist, I sit down to study the formation of resolutions or the peculiarities of emotional moods by reflection on my own experience, the state in which I study the formation of a resolution or the nature of a mood is not itself the state of resolving or of experiencing the mood in question. We cannot too strongly insist that, if by “self-consciousness” is meant a cognitive state which is its own object, there is no such thing, and it is a psychological impossibility that there should be any such thing, as self-consciousness. No cognitive state ever has itself for its own object. Every cognitive state has for its object something other than itself.[[51]]
Even where I make an assertion about my subjective condition, as when I say “I know I am very angry,” the state of knowing about my feeling is as distinct from the feeling itself as the state of knowing that I see red is from the red colour that I see. What the subjectivist does is to confuse the two. Because the act of knowing is itself a state of the knowing subject, and because in some cases the knowledge may again have reference to some other state of the same subject, he infers that what I know at any moment is my own subjective condition in the act of knowing. In other and more technical words, he confuses the cognitive act or state with its own object. To what absurd results this confusion would lead him, if he were logical in the inferences he makes from it, we have already seen. We can now see that psychologically the confusion is a double one. (1) The subjectivist confuses experience with mere awareness of a presented content. He ignores the presence of the true “subjective” factor of selective attention throughout experience, and is thus led to forget that all experiences imply an element which is in the experiencing mind but not presented to it. (2) And in confining his attention to the presentational aspect of experience, he goes on to confound the presented content with the fact of its presentation. As against this second confusion it is essential to a true theory of knowledge to emphasise three points of distinction between the presented content or object of a cognitive state and the state itself, considered as a process in the history of an experiencing subject. (1) The cognitive state is never its own object, it refers to or cognises an object distinct from its own existence as a psychical occurrence. This is the truth which Realism distorts into the doctrine that the object of knowledge must have a reality of “independent of” experience. (2) The object of knowledge is never created by the occurrence of the psychical state in which a particular percipient becomes aware of its existence. This is just as true of so-called “merely ideal” objects as of physical things. The properties of the natural logarithms or of the circular functions in trigonometry are just as independent of my knowledge of them as the qualities of the trees and animals I should see if I turned from my writing desk and looked out at the window. (3) The object of knowledge has always a character of which only a fragment is ever presented to my perception or reflection in any cognitive state. Every cognitive state refers to or stands for a great deal more than it directly means to me.
(3) The origin of the subjectivist fallacy, as has been brilliantly shown by Avenarius,[[52]] is to be found in the “intrasubjective intercourse” of a plurality of percipients capable of communicating their experience to each other. So long as I am dealing solely with myself as an experiencing being and my relation to my own environment, there is no possibility of a subjectivist interpretation. In my own direct experience I have to do neither with “mental states” nor with mere “objects of cognition,” but with things which in various ways by their interference assist or hinder the accomplishment of my various purposes, and of which I have therefore to take note, so as to adapt my ways of reaching my ends to their ways of behaviour. Hence the “natural” view of the world, for a single experiencing being, would be that of “naïve realism,” to which the things forming my environment are real in precisely the same sense in which I am real myself. But as soon as I have to take account of the experiences of other percipients, there arises an inevitable fallacy which leads to philosophical consequences of the gravest kind. Starting with the assumption that the things I perceive are the real things, I feel a difficulty as to how the same things can be perceived by the other percipients around me. E.g., if the sun I see is the real sun, what about the sun seen by some one else? Instead of finding the true explanation, that all the percipients are in relation to a common environment which is independent of its presence to any one percipient’s experience, I very naturally fall into the mistake of thinking the things perceived by other men to be “ideas” or “percepts” of the real things perceived by me. These perceptual copies of the real things I, for obvious reasons, locate somewhere “in” the organisms of my fellow-percipients. Then I go on to interpret my own experience in terms of the theory I originally devised to meet the case of my fellow-men, and infer that what I myself perceive is a set of “percepts” or “ideas” produced “in” my organism by a reality “outside” all experience. And it is then an easy step to the final conclusion that, inasmuch as all known and knowable things are mere “ideas in some one’s head,” nothing else exists. Subjectivism is thus the last step in the development of the fallacy which begins with what Avenarius calls “introjection.” Just as we learned that the existence of our fellow-men is the cardinal fact of experience which affords the most immediate refutation of the subjectivist theory, so the original source of the subjectivist fallacy is failure to recognise their experience as being on the same level of reality as our own.