It is probably in some such manner as this, that almost all verbs have become personal, and that mankind have learned by degrees to split and divide almost every event into a great number of metaphysical parts, expressed by the different parts of speech, variously combined in the different members of every phrase and sentence.10 The same sort of progress seems to have been made in the art of speaking as in the art of writing. When mankind first began to attempt to express their ideas by writing, every character represented a whole word. But the number of words being almost infinite, the memory found itself quite loaded and oppressed by the multitude of characters which it was obliged to retain. Necessity taught them, therefore, to divide words into their elements, and to invent characters which should represent, not the words themselves, but the elements of which they were composed. In consequence of this invention, every particular word came to be represented, not by one character, but by a multitude of characters; and the expression of it in writing became much more intricate and complex than before. But though particular words were thus represented by a greater number of characters, the whole language was expressed by a much smaller, and about four and twenty letters were found capable of supplying the place of that immense multitude of characters, which were requisite before. In the same manner, in the beginnings of language, men seem to have attempted to express every particular event, which they had occasion to take notice of, by a particular word, which expressed at once the whole of that event. But as the number of words must, in this case, have become really infinite in consequence of the really infinite variety of events, men found themselves partly compelled by necessity, and partly conducted by nature, to divide every event into what may be called its metaphysical elements, and to institute words, which should denote not so much the events, as the elements of which they were composed. The expression of every particular event, became in this manner more intricate and complex, but the whole system of the language became more coherent, more connected, more easily retained and comprehended.
When verbs, from being originally impersonal, had thus, by the division of the event into its metaphysical elements, become personal it is natural to suppose that they would first be made use of in the third person singular. No verb is ever used impersonally in our language nor, so far as I know, in any other modern tongue. But in the ancient languages, whenever any verb is used impersonally, it is always in the third person singular. The termination of those verbs, which are still always impersonal, is constantly the same with that of the third person singular of personal verbs. The consideration of these circumstances, joined to the naturalness of the thing itself, may therefore serve to convince us that verbs first became personal in what is now called the third person singular.
But as the event, or matter of fact, which is expressed by a verb, may be affirmed either of the person who speaks, or of the person who is spoken to, as well as of, some third person or object, it becomes necessary to fall upon some method of expressing these two peculiar relations of the event. In the English language this is commonly done, by prefixing, what are called the personal pronouns, to the general word which expresses the event affirmed. I came, you came, he or it came; in these phrases the event of having come is, in the first, affirmed of the speaker; in the second, of the person spoken to; in the third, of some other person or object. The first formers of language, it may be imagined, might have done the same thing, and prefixing in the same manner the two first personal pronouns, to the same termination of the verb, which expressed the third person singular, might have said ego venit, tu venit, as well as ille or illud venit. And I make no doubt but they would have done so, if at the time when they had first occasion to express these relations of the verb there had been any such words as either ego or tu in their language. But in this early period of the language, which we are now endeavouring to describe, it is extremely improbable that any such words would be known. Though custom has now rendered them familiar to us, they, both of them, express ideas extremely metaphysical and abstract. The word I, for example, is a word of a very particular species. Whatever speaks may denote itself by this personal pronoun. The word I, therefore, is a general word, capable of being predicated, as the logicians say, of an infinite variety of objects. It differs, however, from all other general words in this respect; that the objects of which it may be predicated, do not form any particular species of objects distinguished from all others. The word I, does not, like the word man, denote a particular class of objects separated from all others by peculiar qualities of their own. It is far from being the name of a species, but, on the contrary, whenever it is made use of, it always denotes a precise individual, the particular person who then speaks. It may be said to be, at once, both what the logicians call, a
