Were Linguistic really a different science from Æsthetic it would not have for its object expression, which is the essentially æsthetic fact; that is to say, we must deny that language is expression. But an emission of sounds which expresses nothing is not language. Language is sound articulated, circumscribed and organized for the purposes of expression. If, on the other hand, linguistic were a special science in respect to Æsthetic, it would necessarily have for its object a special class of expressions. But the non-existence of classes of expression is a point which we have already demonstrated.
Æsthetic formulation of linguistic problems. Nature of language.
The problems which Linguistic tries to solve, and the errors in which Linguistic has been and is involved, are the same that respectively occupy and complicate Æsthetic. If it be not always easy, it is on the other hand always possible to reduce the philosophic questions of Linguistic to their æsthetic formula.
The disputes themselves as to the nature of the one find their parallel in those as to the nature of the other. Thus it has been disputed whether Linguistic be a historical or a scientific discipline, and, the scientific having been distinguished from the historical, it has been asked whether it belong to the order of the natural or of the psychological sciences, understanding by these latter empirical Psychology as well as the Sciences of the spirit. The same has happened with Æsthetic, which some have looked upon as a natural science (confusing the æsthetic and the physical sense of the word expression). Others have looked upon it as a psychological science (confusing expression in its universality with the empirical classification of expressions). Others again, denying the very possibility of a science of such a subject, change it into a simple collection of historical facts; not one of these attaining to the consciousness of Æsthetic as a science of activity or of value, a science of the spirit.
Linguistic expression, or speech, has often seemed to be a fact of interjection, which belongs to the so-called physical expressions of the feelings, common alike to men and animals. But it was soon perceived that an abyss yawns between the "Ah!" which is a physical reflex of pain and a word; as also between that "Ah!" of pain and the "Ah!" employed as a word. The theory of the interjection being abandoned (jocosely termed the "Ah! Ah!" theory by German linguists), the theory of association or convention appeared. This is liable to the same objection which destroyed æsthetic associationism in general: speech is unity, not multiplicity of images, and multiplicity does not explain, but indeed presupposes the expression to be explained. A variant of linguistic associationism is the imitative, that is to say, the theory of onomatopœia, which the same philologists deride under the name of the "bow-wow" theory, from the imitation of the dog's bark, which, according to the onomatopœists, must have given its name to the dog.
The most usual theory of our times as regards language (apart from mere crass naturalism) consists of a sort of eclecticism or mixture of the various theories to which we have referred. It is assumed that language is in part the product of interjections and in part of onomatopœia and convention. This doctrine is altogether worthy of the philosophical decadence of the second half of the nineteenth century.
Origin of language and its development.
We must here note an error into which have fallen those very philologists who have best discerned the activistic nature of language, when they maintain that although language was originally a spiritual creation, yet that it afterwards increased by association. But the distinction does not hold, for origin in this case cannot mean anything but nature or character; and if language be spiritual creation, it must always be creation; if it be association, it must have been so from the beginning. The error has arisen from having failed to grasp the general principle of Æsthetic, known to us: that expressions already produced must descend to the rank of impressions before they can give rise to new impressions. When we utter new words we generally transform the old ones, varying or enlarging their meaning; but this process is not associative, it is creative, although the creation has for material the impressions, not of the hypothetical primitive man, but of man who has lived long ages in society, and who has, so to say, stored so many things in his psychic organism, and among them so much language.
Relation between Grammar and Logic.