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 coeval 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.
Impersonal verbs, which express in one word a complete event, which preserve in the expression that perfect simplicity and unity, which there always is in the object and in the idea, and which suppose no abstraction, or metaphysical division of the event into its several constituent members of subject and attribute, would, in all probability, be the species of verbs first invented. The verbs pluit, it rains; ningit, it snows; tonat, it thunders; lucet, it is day; turbatur, there is a confusion, etc., each of them express a complete affirmation, the whole of an event, with that perfect simplicity and unity with which the mind conceives it in nature. On the contrary, the phrases, Alexander ambulat, Alexander walks; Petrus sedet, Peter sits, divide the event, as it were, into two parts, the person or subject, and the attribute, or matter of fact, affirmed of that subject. But in nature, the idea or conception of Alexander walking, is as perfectly and completely one simple conception, as that of Alexander not walking. The division of this event, therefore, into two parts, is altogether artificial, and is the effect of the imperfection of language, which, upon this, as upon many other occasions, supplies, by a number of words, the want of one, which could express at once the whole matter of fact that was meant to be affirmed. Everybody must observe how much more simplicity there is in the natural expression, pluit, than in the more artificial expressions, imber decidit, the rain falls; or tempestas est pluvia, the weather is rainy. In these two last expressions, the simple event, or matter of fact, is artificially split and divided in the one, into two; in the other, into three parts. In each of them it is expressed by a sort of grammatical circumlocution, of which the significancy is founded upon a certain metaphysical analysis of the component parts of the idea expressed by the word pluit. The first verbs, therefore, perhaps even the first words, made use of in the beginnings of language, would in all probability be such impersonal verbs. It is observed accordingly, I am told, by the Hebrew grammarians, that the radical words of their language, from which all the others are derived, are all of them verbs, and impersonal verbs.
It is easy to conceive how, in the progress of language, those impersonal verbs should become personal. Let us suppose, for example, that the word venit, it comes, was originally an impersonal verb, and that it denoted, not the coming of something in general, as at present, but the coming of a particular object, such as the lion. The first savage inventors of language, we shall suppose, when they observed the approach of this terrible animal, were accustomed to cry out to one another, venit, that is, the lion comes; and that this word thus expressed a complete event, without the assistance of any other. Afterwards, when, on the further progress of language, they had begun to give names to particular substances, whenever they observed the approach of any other terrible object, they would naturally join the name of that object to the word venit, and cry out, venit ursus, venit lupus. By degrees the word venit would thus come to signify the coming of any terrible object, and not merely the coming of the lion. It would, now, therefore, express, not the coming of a particular object, but the coming of an object of a particular kind. Having become more general in its signification, it could no longer represent