It does not seem very rational to assume that the motion of the muscles in breathing should of itself be the natural, purely physical reflex of a feeling of love in the same way as, for instance, certain half-spasmodic contractions of several muscles in the upper part of the face can be the immediate expression of wrath.
I do not believe either that the mere contact of the lips with another person’s face was originally sufficient to express “I love you.” Naturally, the longing to touch the beloved ones body, to approach it as closely as possible, is a very essential manifestation of erotic emotion; but so far as the contact of the lips is concerned, there is reason for assuming that, originally, without its being the direct object, it had been, moreover, and perhaps in an equally high degree, a means of attaining a definite sensual gratification—a gratification that can be realised by the co-operation of the lips and mouth.
As the nose-salutation partly originates in smell, so the mouth salutation may, to a certain extent[32] at least, have its origin in taste, or—which is even more probable—in both smell and taste? These latter, as you know, are very closely related to each other.
The dog shows his joy at his master’s presence by licking the latter’s hand. Why is this? It would not, I suppose, be too rash to assume that he as good as “tastes” him; loving his master, he therefore loves the taste and smell peculiar to him.
The cow licks her calf, and in this one may presumably see the expression of a feeling which is to some extent satisfied by this action. And why so? Undoubtedly by recognising by the tongue (and nose) the taste (and smell) peculiar to the calf.
Now, is it not exceedingly probable that the human kiss, in its original form, can, as to its passive element, be accounted for in an identical way, viz., as a purely sensual assimilation, by means of the nerves of taste and smell, of another person’s peculiar qualities with respect to gustus and odor? These qualities have probably been much more conspicuous in primitive mankind than nowadays, just as it is quite certain that its faculty of taste and smell were far more developed than ours.
And have we not still, especially in the love-kiss, but also in kisses between women, very numerous representatives of the primitive kiss, which I should like to term the “taste-kiss.” I have many times pointed out, in the preceding pages, the part which taste plays in kissing; and I shall now add what I have often heard young girls say to a lady they had kissed amorously: “Your kisses taste so nice.”
From being a natural expression for love the sucking, tasting kiss has, in course of time, become reduced to nothing more than a simple inspiratory movement of the lips, which, by analogy, has come to express many other feelings, such as gratitude, admiration, compassion, tenderness, etc. It has become at length so degraded as to be used as a purely conventional salutation.
If this reasoning be correct, then the mouth-kiss, in the course of its development, presents a perfect parallel with the nose-kiss. Both these forms of greeting were originally closely allied, but the mouth-kiss had better conditions for development than the nose-kiss. It has become a salutation of a considerably higher sort, and whenever savage tribes come into contact with civilised nations the nose-kiss is gradually discarded. Such, for instance, was the case in Madagascar. There is no doubt that savages can express very deep emotions by the nose-kiss. A French missionary tells the story of how he was received when he went back to the island of Pomotu: “When we approached the country all the population assembled on the beach. They had harpoons in their hands, for they imagined we were enemies; but, as soon as they saw my cassock, they shouted, ‘That’s the Father, away with the harpoons,’ and when we reached the shore they all rushed forward to kiss me by rubbing their noses against mine, according to the custom of that country. The ceremony was not very agreeable to me, and I was not altogether pleased at having to take part in it.”[33] Civilised people, on the other hand, regard the nose-kiss as something highly ludicrous, and I doubt if any poet has the power of casting a halo of romance over it.
The mouth-kiss, on the contrary, is redolent of the purest and most delicate poesy. A German minnesinger rhapsodises thus: “The radiant sun is darkened before mine eyes when I behold the roses that bloom on my darling’s mouth.”