The Theory of Moral Sentiments - Adam Smith [232]
Prepositions are the words which express relation considered, in the same manner, in concrete with the co-relative object. Thus the prepositions of, to, for, with, by, above, below, &c. denote some relation subsisting between the objects expressed by the words between which the prepositions are placed; and they denote that this relation is considered in concrete with the co-relative object. Words of this kind serve to distinguish particular objects from others of the same species, when those particular objects cannot be so properly marked out by any peculiar qualities of their own. When we say, the green tree of the meadow, for example, we distinguish a particular tree, not only by the quality which belongs to it, but by the relation which it stands in to another object.
As neither quality nor relation can exist in abstract, it is natural to suppose that the words which denote them considered in concrete, the way in which we always see them subsist, would be of much earlier invention than those which express them considered in abstract, the way in which we never see them subsist. The words green and blue would, in all probability, be sooner invented than the words greenness and blueness; the words above and below, than the words superiority and inferiority. To invent words of the latter kind requires a much greater effort of abstraction than to invent those of the former. It is probable, therefore, that such abstract terms would be of much later institution. Accordingly, their etymologies generally show that they are so, they being generally derived from others that are concrete.
But though the invention of nouns adjective be much more natural than that of the abstract nouns substantive derived from them, it would still, however, require a considerable degree of abstraction and generalization. Those, for example, who first invented the words green, blue, red, and the other names of colours, must have observed and compared together a great number of objects, must have remarked their resemblances and dissimilitudes in respect of the quality of colour, and must have arranged them, in their own minds, into different classes and assortments, according to those resemblances and dissimilitudes. An adjective is by nature a general, and in some measure, an abstract word, and necessarily presupposes the idea of a certain species or assortment of things, to all of which it is equally applicable. The word green could not, as we were supposing might be the case of the word cave, have been originally the name of an individual, and afterwards have become, by what grammarians call an Antonomasia, the name of a species. The word green denoting, not the name of a substance, but the peculiar quality of a substance, must from the very first, have been a general word, and considered as equally applicable to any other substance possessed of the same quality. The man who first distinguished a particular object by the epithet of green, must have observed other objects that were not green, from which he meant to separate it by this appellation. The institution of this name, therefore, supposes comparison. It likewise supposes some degree of abstraction. The person who first invented this appellation must have distinguished the quality from the object to which it belonged, and must have conceived the object as capable of subsisting without the quality. The invention, therefore, even of the simplest nouns adjective, must have required more metaphysics than we are apt to be aware of. The different mental operations, of arrangement or classing, of comparison, and of abstraction, must all have been employed, before even the names of the different colours, the least metaphysical of all nouns adjective, could be instituted. From all which I infer, that when languages were beginning to be formed, nouns adjective would by no means be the words of the earliest invention.
There is another expedient for denoting the different qualities of different substances, which as it requires no abstraction, nor any conceived separation