In spite of what has been said, it will be asserted that there are definite, independent, original instincts which manifest themselves in specific acts in a one-to-one correspondence. Fear, it will be said, is a reality, and so is anger, and rivalry, and love of mastery of others, and self-abasement, maternal love, sexual desire, gregariousness and envy, and each has its own appropriate deed as a result. Of course they are realities. So are suction, rusting of metals, thunder and lightning and lighter-than-air flying machines. But science and invention did not get on as long as men indulged in the notion of special forces to account for such phenomena. Men tried that road, and it only led them into learned ignorance. They spoke of nature's abhorrence of a vacuum; of a force of combustion; of intrinsic nisus toward this and that; of heaviness and levity as forces. It turned out that these "forces" were only the phenomena over again, translated from a specific and concrete form (in which they were at least actual) into a generalized form in which they were verbal. They converted a problem into a solution which afforded a simulated satisfaction.

Advance in insight and control came only when the mind turned squarely around. After it had dawned upon inquirers that their alleged causal forces were only names which condensed into a duplicate form a variety of complex occurrences, they set about breaking up phenomena into minute detail and searching for correlations, that is, for elements in other gross phenomena which also varied. Correspondence of variations of elements took the place of large and imposing forces. The psychology of behavior is only beginning to undergo similar treatment. It is probable that the vogue of sensation-psychology was due to the fact that it seemed to promise a similar detailed treatment of personal phenomena. But as yet we tend to regard sex, hunger, fear, and even much more complex active interests as if they were lump forces, like the combustion or gravity of old-fashioned physical science.

It is not hard to see how the notion of a single and separate tendency grew up in the case of simpler acts like hunger and sex. The paths of motor outlet or discharge are comparatively few and are fairly well defined. Specific bodily organs are conspicuously involved. Hence there is suggested the notion of a correspondingly separate psychic force or impulse. There are two fallacies in this assumption. The first consists in ignoring the fact that no activity (even one that is limited by routine habit) is confined to the channel which is most flagrantly involved in its execution. The whole organism is concerned in every act to some extent and in some fashion, internal organs as well as muscular, those of circulation, secretion, etc. Since the total state of the organism is never exactly twice alike, in so far the phenomena of hunger and sex are never twice the same in fact. The difference may be negligible for some purposes, and yet give the key for the purposes of a psychological analysis which shall terminate in a correct judgment of value. Even physiologically the context of organic changes accompanying an act of hunger or sex makes the difference between a normal and a morbid phenomenon.

In the second place, the environment in which the act takes place is never twice alike. Even when the overt organic discharge is substantially the same, the acts impinge upon a different environment and thus have different consequences. It is impossible to regard these differences of objective result as indifferent to the quality of the acts. They are immediately sensed if not clearly perceived; and they are the only components of the meaning of the act. When feelings, dwelling antecedently in the soul, were supposed to be the causes of acts, it was natural to suppose that each psychic element had its own inherent quality which might be directly read off by introspection. But when we surrender this notion, it becomes evident that the only way of telling what an organic act is like is by the sensed or perceptible changes which it occasions. Some of these will be intra-organic, and (as just indicated) they will vary with every act. Others will be external to the organism, and these consequences are more important than the intra-organic ones for determining the quality of the act. For they are consequences in which others are concerned and which evoke reactions of favor and disfavor as well as cooperative and resisting activities of a more indirect sort.

Most so-called self-deception is due to employing immediate organic states as criteria of the value of an act. To say that it feels good or yields direct satisfaction is to say that it gives rise to a comfortable internal state. The judgment based upon this experience may be entirely different from the judgment passed by others upon the basis of its objective or social consequences. As a matter of even the most rudimentary precaution, therefore, every person learns to recognize to some extent the quality of an act on the basis of its consequences in the acts of others. But even without this judgment, the exterior changes produced by an act are immediately sensed, and being associated with the act become a part of its quality. Even a young child sees the smash of things occasionally by his anger, and the smash may compete with his satisfied feeling of discharged energy as an index of value.

A child gives way to what, grossly speaking, we call anger. Its felt or appreciated quality depends in the first place upon the condition of his organism at the time, and this is never twice alike. In the second place, the act is at once modified by the environment upon which it impinges so that different consequences are immediately reflected back to the doer. In one case, anger is directed say at older and stronger playmates who immediately avenge themselves upon the offender, perhaps cruelly. In another case, it takes effect upon weaker and impotent children, and the reflected appreciated consequence is one of achievement, victory, power and a knowledge of the means of having one's own way. The notion that anger still remains a single force is a lazy mythology. Even in the cases of hunger and sex, where the channels of action are fairly demarcated by antecedent conditions (or "nature"), the actual content and feel of hunger and sex, are indefinitely varied according to their social contexts. Only when a man is starving, is hunger an unqualified natural impulse; as it approaches this limit, it tends to lose, moreover, its psychological distinctiveness and to become a raven of the entire organism.

The treatment of sex by psycho-analysts is most instructive, for it flagrantly exhibits both the consequences of artificial simplification and the transformation of social results into psychic causes. Writers, usually male, hold forth on the psychology of woman, as if they were dealing with a Platonic universal entity, although they habitually treat men as individuals, varying with structure and environment. They treat phenomena which are peculiarly symptoms of the civilization of the West at the present time as if they were the necessary effects of fixed native impulses of human nature. Romantic love as it exists today, with all the varying perturbations it occasions, is as definitely a sign of specific historic conditions as are big battle ships with turbines, internal-combustion engines, and electrically driven machines. It would be as sensible to treat the latter as effects of a single psychic cause as to attribute the phenomena of disturbance and conflict which accompany present sexual relations as manifestations of an original single psychic force or Libido. Upon this point at least a Marxian simplification is nearer the truth than that of Jung.

Again it is customary to suppose that there is a single instinct of fear, or at most a few well-defined sub-species of it. In reality, when one is afraid the whole being reacts, and this entire responding organism is never twice the same. In fact, also, every reaction takes place in a different environment, and its meaning is never twice alike, since the difference in environment makes a difference in consequences. It is only mythology which sets up a single, identical psychic force which "causes" all the reactions of fear, a force beginning and ending in itself. It is true enough that in all cases we are able to identify certain more or less separable characteristic acts—muscular contractions, withdrawals, evasions, concealments. But in the latter words we have already brought in an environment. Such terms as withdrawal and concealment have no meaning except as attitudes toward objects. There is no such thing as an environment in general; there are specific changing objects and events. Hence the kind of evasion or running away or shrinking up which takes place is directly correlated with specific surrounding conditions. There is no one fear having diverse manifestations; there are as many qualitatively different fears as there are objects responded to and different consequences sensed and observed.

Fear of the dark is different from fear of publicity, fear of the dentist from fear of ghosts, fear of conspicuous success from fear of humiliation, fear of a bat from fear of a bear. Cowardice, embarrassment, caution and reverence may all be regarded as forms of fear. They all have certain physical organic acts in common—those of organic shrinkage, gestures of hesitation and retreat. But each is qualitatively unique. Each is what it is in virtue of its total interactions or correlations with other acts and with the environing medium, with consequences. High explosives and the aeroplane have brought into being something new in conduct. There is no error in calling it fear. But there is error, even from a limited clinical standpoint, in permitting the classifying name to blot from view the difference between fear of bombs dropped from the sky and the fears which previously existed. The new fear is just as much and just as little original and native as a child's fear of a stranger.

For any activity is original when it first occurs. As conditions are continually changing, new and primitive activities are continually occurring. The traditional psychology of instincts obscures recognition of this fact. It sets up a hard-and-fast preordained class under which specific acts are subsumed, so that their own quality and originality are lost from view. This is why the novelist and dramatist are so much more illuminating as well as more interesting commentators on conduct than the schematizing psychologist. The artist makes perceptible individual responses and thus displays a new phase of human nature evoked in new situations. In putting the case visibly and dramatically he reveals vital actualities. The scientific systematizer treats each act as merely another sample of some old principle, or as a mechanical combination of elements drawn from a ready-made inventory.