To express relation, therefore, by a variation in the name of the co-relative object, requiring neither abstraction, nor generalization, nor comparison of any kind, would, at first, be much more natural and easy, than to express it by those general words called prepositions, of of which the first invention must have demanded some degree of all those operations.

The number of cases is different in different languages. There are five in the Greek, six in the Latin, and there are said to be ten in the Armenian language. It must have naturally happened that there should be a greater or a smaller number of cases, according as in the terminations of nouns substantive the first formers of any language happened to have established a greater or a smaller number of variations, in order to express the different relations they had occasion to take notice of, before the invention of those more general and abstract prepositions which could supply their place.

It is, perhaps, worth while to observe that those prepositions, which in modern languages hold the place of the ancient cases, are, of all others, the most general, and abstract, and metaphysical; and of consequence, would probably be the last invented. Ask any man of common acuteness, What relation is expressed by the preposition above? He will readily answer, that of superiority. By the preposition below? He will as quickly reply that of inferiority. But ask him, what relation is expressed by the preposition of, and, if he has not beforehand employed his thoughts a good deal upon these subjects, you may safely allow him a week to consider of his answer. The prepositions above and below do not denote any of the relations expressed by the cases in the 313 ancient languages. But the preposition of, denotes the same relation, which is in them expressed by the genitive case; and which, it is easy to observe, is of a very metaphysical nature. The preposition of, denotes relation in general, considered in concrete with the co-relative object. It marks that the noun substantive which goes before it, is somehow or other related to that which comes after it, but without in any respect ascertaining, as is done by the preposition above, what is the peculiar nature of that relation. We often apply it, therefore, to express the most opposite relations; because, the most opposite relations agree so far that each of them comprehends in it the general idea or nature of a relation. We say, the father of the son, and the son of the father; the fir-trees of the forest, and the forest of the fir-trees. The relation in which the father stands to the son is, it is evident, a quite opposite relation to that in which the son stands to the father; that in which the parts stand to the whole, is quite opposite to that in which the whole stands to the parts. The word of, however, serves very well to denote all those relations, because in itself it denotes no particular relation, but only relation in general; and so far as any particular relation is collected from such expressions, it is inferred by the mind, not from the preposition itself, but from the nature and arrangement of the substantives, between which the preposition is placed.

What I have said concerning the preposition of, may in some measure be applied to the prepositions to, for, with, by, and to whatever other prepositions are made use of in modern languages, to supply the place of the ancient cases. They all of them express very abstract and metaphysical relations, which any man, who takes the trouble to try it, will find it extremely difficult to express by nouns substantive, in the same manner as we may express the relation denoted by the preposition above, by the noun substantive superiority. They all of them, however, express some specific relation, and are, consequently, none of them so abstract as the preposition of, which may be regarded as by far the most metaphysical of all prepositions. The prepositions, therefore, which are capable of supplying the place of the ancient cases, being more abstract than the other prepositions, would naturally be of more difficult invention. The relations at the same time which those prepositions express, are, of all others, those which we have most frequent occasion to mention. The prepositions above, below, near, within, without, against, &c., are much more rarely made use of, in modern languages, than the prepositions of, to, for, with, from, by. A preposition of the former kind will not occur twice in a page; we can scarce compose a single sentence without the assistance of one or two of the latter. If these latter prepositions, therefore, which supply the place of the cases, would be of such difficult invention on account of their abstractedness, some expedient to supply their place must have been of indispensable necessity, on account of the frequent occasion 314 which men have to take notice of the relations which they denote. But there is no expedient so obvious, as that of varying the termination of one of the principal words.

It is, perhaps, unnecessary to observe, that there are some of the cases in the ancient languages, which, for particular reasons, cannot be represented by any prepositions. These are the nominative, accusative, and vocative cases. In those modern languages, which do not admit of any such variety in the terminations of their nouns substantive, the correspondent relations are expressed by the place of the words, and by the order and construction of the sentence.

As men have frequently occasion to make mention of multitudes as well as of single objects, it became necessary that they should have some method of expressing number. Number may be expressed either by a particular word, expressing number in general, such as the words many, more, &c., or by some variation upon the words which express the things numbered. It is this last expedient which mankind would probably have recourse to, in the infancy of language. Number, considered in general, without relation to any particular set of objects numbered, is one of the most abstract and metaphysical ideas, which the mind of man is capable of forming; and, consequently, is not an idea, which would readily occur to rude mortals, who were just beginning to form a language. They would naturally, therefore, distinguish when they talked of a single, and when they talked of a multitude of objects, not by any metaphysical adjectives, such as the English a, an, many, but by a variation upon the termination of the word which signified the objects numbered. Hence the origin of the singular and plural numbers, in all the ancient languages; and the same distinction has likewise been retained in all the modern languages, at least, in the greater part of the words.

All primitive and uncompounded languages seem to have a dual, as well as a plural number. This is the case of the Greek, and I am told of the Hebrew, of the Gothic, and of many other languages. In the rude beginnings of society, one, two, and more, might possibly be all the numeral distinctions which mankind would have any occasion to take notice of. These they would find it more natural to express, by a variation upon every particular noun substantive, than by such general and abstract words as one, two, three, four, &c. These words, though custom has rendered them familiar to us, express, perhaps, the most subtile and refined abstractions, which the mind of man is capable of forming. Let any one consider within himself, for example, what he means by the word three, which signifies neither three shillings, nor three pence, nor three men, nor three horses, but three in general; and he will easily satisfy himself that a word, which denotes so very metaphysical an abstraction, could not be either a very obvious or a very early invention. I have read of some savage nations, whose language 315 was capable of expressing no more than the three first numeral distinctions. But whether it expressed those distinctions by three general words, or by variations upon the nouns substantive, denoting the things numbered, I do not remember to have met with any thing which could clearly determine.

As all the same relations which subsist between single, may likewise subsist between numerous objects, it is evident there would be occasion for the same number of cases in the dual and in the plural, as in the singular number. Hence the intricacy and complexness of the declensions in all the ancient languages. In the Greek there are five cases in each of the three numbers, consequently fifteen in all.

As nouns adjective, in the ancient languages, varied their terminations according to the gender of the substantive to which they were applied, so did they likewise according to the case and the number. Every noun adjective in the Greek language, therefore, having three genders, and three numbers, and five cases in each number, may be considered as having five and forty different variations. The first formers of language seem to have varied the termination of the adjective, according to the case and the number of the substantive, for the same reason which made them vary it according to the gender; the love of analogy, and of a certain regularity of sound. In the signification of adjectives there is neither case nor number, and the meaning of such words is always precisely the same, notwithstanding all the variety of termination under which they appear. Magnus vir, magni viri, magnorum virorum; a great man, of a great man, of great men; in all these expressions the words, magnus, magni, magnorum, as well as the word great, have precisely one and the same signification, though the substantives to which they are applied have not. The difference of termination in the noun adjective is accompanied with no sort of difference in the meaning. An adjective denotes the qualification of a noun substantive. But the different relations in which that noun substantive may occasionally stand, can make no sort of difference upon its qualification. If the declensions of the ancient languages are so very complex, their conjugations are infinitely more so. And the complexness of the one is founded upon the same principle with that of the other, the difficulty of forming, in the beginnings of language, abstract and general terms.

Verbs must necessarily have been coëval with the very first attempts towards the formation of language. No affirmation can be expressed without the assistance of some verb. We never speak but in order to express our opinion that something either is or is not. But the word denoting this event, or this matter of fact, which is the subject of our affirmation, must always be a verb.