Tender emotion marks an important stage in the evolution of affective life; with it we pass beyond the period of the purely egoistic emotions. The date of its appearance, as I have said, is not fixed with certainty; it may be at two months, according to Darwin, who noted at this age one of his characteristic modes of expression, the smile; more probably about nine months (Darwin) or twelve months (Perez), according to definite observations.

The physiological expression of tenderness, as far as movements are concerned, is reducible to a single formula—attraction. It shows itself either by elementary movements of approach, or by contact, or by the embrace which is its ultimate end, of which all the rest are but mitigated and arrested forms. It therefore stands in relation to the primordial sense, touch, of which Bain says, “Touch is both the alpha and the omega of affection.”[[146]] The movements have a general character of relaxation, contrasting greatly with that of anger. One mode of expression which is specially, if not exclusively, appropriated to it is the smile. Is this the initial stage of laughter? or is it, on the contrary, only a weakened form of it, an arrest of development? This question has been discussed without much advantage. Darwin adopts the former view, which scarcely seems reconcilable with the general law of evolution; the child smiles before it laughs, whereas we should expect to meet with the inverse order of phenomena. Tender emotion approximates to joy; and its circulatory and respiratory modifications are analogous. There is acceleration, as in the case of pleasure, but to a less degree; tenderness suiting better with moderate and reposeful sensations.

It is also accompanied by an increase in the secretions, especially in that of the mammary glands in the woman. In the case of the lachrymal glands this symptom is more difficult to explain. It is known that tenderness often moistens the eyes; but tears are produced under conditions so varied, and sometimes so contradictory, that, even after all the recent work which has appeared on the expression of the emotions, the question of the causes seems to me very far from being exhausted. The pressure of the blood has a direct influence on this secretion, which is always accompanied by an increase in the circulation; but the simplicity of the mechanism is not incompatible with a diversity of causes. Tears may be provoked by mechanical or physiological acts: irritation of the conjunctiva, coughing, effort, vomiting; and by totally distinct psychic states, sorrow, joy, tenderness. In fact, all attempts at explanation relate to the painful states only; cases of this kind being, though not of exclusive occurrence, more frequent than others. Darwin admits that screaming, in infants, causes the vessels of the eye to become gorged with blood, and this produces a contraction of the orbicular muscles as a means of protection, whence a reflex action on the lachrymal glands; the shedding of tears continuing even after the suppression of the screams. Wundt rejects this explanation, seeing in the lachrymal glands derivative organs assuaging[assuaging] pain; this secretion, which is permanent, cleanses the eye from foreign bodies, such as dust and insects, etc. As the visual images are the most important of all, the shedding of tears would be an unconscious effort to drive away sad representations, having for its foundation an analogy between the painful sensations and the images. Whatever one may think of these hypotheses, they consider tears as signs of pain exclusively.

The augmentation of the lachrymal secretion depends on the increase in the pressure of the blood; now, the circulation is accelerated by joy and tenderness, as is proved by the shining of the eyes. The appearance of tears—not very abundant, however, in such cases—would be the natural consequence. Sorrow, on the contrary, is accompanied by a lowering of the circulation, and very often, in the early stage, tears are entirely wanting. The shedding of tears produces relief, it is a safety-valve; it would answer to a second stage—that of slackened tension—in which the return of vitality has begun. In other words, the tears of joy and tenderness would correspond to the stage of action, the tears of sadness to the stage of reaction.

The psychology of tender emotion seems to me reducible to a single question—that of its origin. The description of its varieties is without interest, and may be found elsewhere. We have stated it as simple and primary. Being the source of all altruistic, social, and moral manifestations, it will be worth our while to consider its nature at the period of its appearance.

In children, and the higher animals, the first manifestation of tenderness is towards the mother or the nurse.

"The relation involved in the sustenance of the child, a relation only a degree less close than that of the fœtus to the maternal organism, constitutes in itself the chief source of the feeling. Along with the supply of nutriment there goes that of warmth, support, or propping, which again is a continuation of the fœtal dependence. This first instinctive or sensuous attachment of the child grows into what we call fondness by the complication of this instinctive feeling with numerous “ideal” or transferred feelings, the product of the many pleasurable sensations, including those of the eye and of the ear, of which the mother is the source."[[147]] The primary tendency, therefore, is directed, in children and animals, to those who have been pleasant to them, or who have done them good, and from whom they hope to receive it again. This is an emotion which, in Herbert Spencer’s nomenclature, might legitimately be called ego-altruistic, or even one with a marked preponderance of egoism. It must be so, for altruism cannot be innate.

The faculty of knowledge begins with an undifferentiated period, in which there is neither subject nor object, but only the consciousness of something without qualification. The separation of the ego and the non-ego in the order of cognition is the stage corresponding to the division, in the emotional order, between conscious egoism and altruism. How does this partial alienation from ourselves come about? How can it arise and be consolidated? These questions will be discussed later, when treating of moral emotion (Chap. VIII.). For the moment, I confine myself to a single question: Are we confronted with a veritable instinct—with an innate tendency incapable of being analysed, showing itself in the consciousness by the tender emotion or its varieties?

We know all the efforts made (especially in the eighteenth century) to reduce altruism by analysis to an extremely refined egoism, to a calculation; thus the tenderness of parents for their children was explained by the expectation of services to be rendered by them in the future. I think it needless to insist on this point.

In favour of inneity, the best argument that can be alleged, because founded on fact, is, that affection and attachment are met with even among animals, to whom we cannot attribute calculation or interested foresight. Apart from maternal love, which manifests itself energetically in very low stages of the animal kingdom, we find examples of benevolent and active sympathy between animals of the same species, and even (though this is rarer) of different species,[[148]] apart from any sexual attraction. Let us add, if necessary, in the case of human beings: “the instantaneous, unreflecting impulses of pity to creatures in distress, although strangers, enemies, criminals, noxious beasts, the absence of all balancings of immediate loss with ultimate gain.... Long-sighted selfishness does not explain the conduct of the Good Samaritan. Again, the hosts of human beings that in all ages have voluntarily given up their lives for their country, could not be influenced by their own advantage. For, although many of these have been taught the hopes of a future existence, this has been by no means universal; and there could be little certainty in the mass of minds that the surrender of this life would receive a full compensation in another.”[[149]]