I.

The special study of the various manifestations of the emotional life enables us to penetrate much further into psychology than do the preceding generalities. This study is not a merely supplementary or elucidatory one to be abbreviated, treated cursorily, or even omitted altogether, as is done by some representatives of the intellectualist theory. As long as we have not considered, seriatim and in detail, every feeling, whether simple or compound, we have no idea of their rich multiplicity of aspects, of which general formulas are only meagre abridgments.

Some say or imply, contemptuously, that this is a purely descriptive study. But so long as we have found no other method of treating the question, it will always be better than silence. Hitherto, experimentation applied to the feelings has been kept within very narrow limits, and has done scarcely anything beyond corroborating the data furnished by observation. We must therefore modify our point of view and seek elsewhere; anthropology, the history of customs, of arts, religions and sciences, will often be more useful to us than the contributions of physiology. The experiments of the laboratory inspire some with a faith not to be shaken; but the evolution of the feelings in time and space, through centuries and races, is a laboratory, operating, for thousands of years, on millions of men; and its documentary value is a high one. It would be a great loss to psychology if these documents were neglected. Having been long confined to introspective observation, it has deliberately cut itself off from the biological sciences, considering them alien or useless to its work. It would not be desirable to fall into a similar error with regard to the concrete development of human life, and, after mutilating the study from below, to do so from above. If the intellectual life has its roots in biology, it is only in social facts that it can find its full development. A science never gains by excessive restriction of its scope; it is better to err in the opposite direction.[[123]]

Since, therefore, we have to pass in review all the forms of feeling, lower and higher, primary and derived, to note the successive moments of their development, and to follow them in their transformations, one question dominates our whole subject: what causes determine the evolution of the feelings?

In order to give to this question a clear and concrete form, let us take primitive man, as reconstructed by the anthropologists, not without much hypothesis and conjecture. Whether he were the ferocious wild beast described by some, or a puny, feeble, naked being, chipping his first weapons among the rolled flints of a river-bed, keeping up with difficulty his famished life from day to day, and finding a precarious shelter from incessant dangers in the hollows of the rocks, it is in any case certain that he made originally but a poor figure on the surface of the globe. How has he progressed from primitive cannibalism to his present moral and social culture? from the bestial sexual act to chivalrous love? from coarse fetichism to religious metaphysics or mysticism? from the rude drawings of the Neolithic age to the refinements of the æsthetic sentiment? from a narrow and limited curiosity to a disinterested enthusiasm for science? How has the passage been accomplished from one extreme to the other? It is clear that a new form of feeling cannot arise by spontaneous generation; it can only be the work of a transformation, of a physiological development. How has this happened? What causes have brought about this metamorphosis?

The principal, essential, fundamental cause is intellectual development.

Another cause, adduced by many writers, but more doubtful and more limited in its action, is transmission by heredity.

1. In spite of its importance, the first cause need not detain us long, since it can only be presented, for the moment, under the form of vague generalities. Its action consists in the ascending progression which rises from the inferior forms of knowledge (sensations and perceptions) to concrete representations, then to abstract representations (generic images), then to the medium and superior forms of abstraction, and involves in its movement concomitant modifications of affective life produced by reaction. Primitive man, like the child and the animal, is at first only a bundle of wants, tendencies, instincts which, when not simply unconscious, are connected with external or internal tendencies. The instinct of self-preservation, a synthetic formula expressing a group of subordinate and convergent instincts, adjusts itself differently according to circumstances—sometimes defensive, sometimes offensive. It is only determined by the successive ends which it has to attain, just as the muscular force of my arm may be equally well employed in raising a weight, in firing a gun, in striking a blow, or in caressing. The intellectual element, whatever it may be, is always the determining principle; never, alone and by itself, the spring of action. The process always follows the same course, and remains identical from start to finish; it passes from the simple into the complex, as we shall see in discussing each separate emotion. The child who feels acutely the possession of a toy, or the deprivation of it, is not affected by the beauty of a landscape, by reason of his limited intellectual power. We know that (in spite of common opinion) a savage, even a barbarian, is not moved by the splendours of civilised life, but only by its petty and puerile sides. Its greater aspects inspire him neither with desire, admiration, nor jealousy, because he does not understand them. Bougainville, in the last century, had already remarked this fact, which has frequently been confirmed since. Speaking of the profound indifference of the Pacific Islanders to the skilled construction of his ships and the instruments belonging to them, he says, “They treat the masterpieces of human industry as laws and phenomena of nature.”

2. Must we admit heredity as a special and independent cause of emotional evolution? This problem has been hotly debated. Darwin, Spencer, and many others following them, admit that certain acquired variations or modifications in the range of the feelings may be hereditarily transmitted, then fixed and organised in a race. They give as examples, fear, the benevolent feelings, the love of nature, the musical sense, etc.; the sudden return of so-called civilised individuals to savage or nomad life, for want of a hereditary tendency fixed by the habit of several generations; while the co-existence of predatory tendencies with the highest culture is for them a case of atavism or reversion.[[124]] On the other hand, the dominant opinion for the last twenty years (I think it shows symptoms of declining) is radically opposed to the inheritance of acquired modifications. Weismann and Wallace, who, more than others, have touched on the psychological parts of this subject, are decidedly for the negative. The question is therefore an open one, and I accept it as such, in order to escape the accusation of a bias in favour of heredity. But even while admitting that there is no fact strictly conclusive in favour of the transmission of psychic peculiarities, it nevertheless remains true that some occurrences of this sort are probable enough, especially in the pathological order. These belong to the category of appetites, tendencies, and passions, much more than to the group of intellectual states. This might have been foreseen, physiological heredity being more stable than psychological, and physiological conditions affecting the emotional life much more immediately than the intellectual.

If then, by a reserve which is perhaps superfluous, we eliminate heredity as a factor in the evolution of the feelings, the functions of conservation and consolidation ordinarily attributed to it ought to be assigned to other causes—the influences of environment, imitation, tradition, education, with its multitudinous influences. It is clear that a new mode of emotion, arising in an isolated human consciousness, cannot last, increase, or become contagious, in totally different and uncongenial surroundings. Religious mysticism was irreconcilable with the bloodthirsty cult of the Aztecs; and what could a native St. Vincent de Paul have done among a tribe of cannibals, or a Mozart among the Fuegians?