Analysis of the Phenomena of the Human Mind

by James Mill

The purposes of language are two. We have occasion to mark sensations or ideas singly; and we have occasion to mark them in trains; in other words, we have need of contrivances to mark not only sensations and ideas; but also the order of them. The contrivances which are necessary to mark this order are the main cause of the complexity of language.

If all names were names of one sort, there would be no difficulty in marking a train of the feelings which they serve to denote. Thus, if all names were names of individuals, as John, James, Peter, we should have no difficulty in marking a train of the ideas of these individuals; all that would be necessary would be to set down the marks, one after another, in the same order in which, one after another, the ideas occurred.

If all names were names of Species, as man, horse, eagle, the facility of marking the order of the ideas which they represent would be the same. If the idea man occurred first, the idea horse second, the idea eagle third; all that would be necessary would be to put down the name or mark man the first, the name or mark horse the second, and the order of marks would represent the order of ideas.

But we have already seen, that the facility of communication requires names of different degrees of 160 comprehensiveness; names of individuals, names of classes, and names both of the larger and the smaller classes. For the younger and less instructed part of my readers, it may be necessary to mention, that the names of the smaller classes, are called names of Species, or specific names; the names of the larger classes, names of Genera, or generic names. Thus, the term animal, denotes a large class; a class which contains the smaller classes, man, horse, dog, &c. The name animal, therefore, is called a Genus, or a generic name; the name man, a Species, or a specific name.

In using names of these different kinds; names of individuals when the idea is restricted to one individual; and, for brevity, the names of classes; the names of the less when necessary, of the large when practicable; there is perpetual need of the substitution of one name for another. When I have used the names, James and John, Thomas and William, and many more, having to speak of such peculiarities of each, as distinguish him from every other, I may proceed to speak of them in general, as included in a class. When this happens, I have occasion for the name of the class, and to substitute the name of the class, for the names of the individuals. By what contrivance is this performed? I have the name of the individual, John; and the name of the class man; and I can set down my two names; John, man; in juxta-position. But this is not sufficient to effect the communication I desire; namely, that the word man is a mark of the same idea of which John is a mark, and a mark of other ideas along with it, those to wit, of which James, Thomas, &c. are marks. To complete my contrivance, I invent a mark, which, placed between my marks, 161 John and man, fixes the idea I mean to convey, that man, is another mark to that idea of which John is a mark, while it is a mark of the other ideas, of which James, Thomas, &c., are marks. For this purpose, we use in English, the mark “is.” By help of this, my object is immediately attained. I say, John “is” a man. I, then, use the word man, instead of the word John, with many advantages; because every thing which I can affirm of the word man, is true not only of John, but of James, and Peter, and every other individual of the class.

The joining of two names by this peculiar mark is the act which has been denominated, PREDICATION; and it is the grand contrivance by which the marks of sensations and ideas are so ordered in discourse, as to mark the order of the trains, which it is our purpose to communicate, or to record.

The form of expression, “John is a man,” is called a Proposition. It consists of three marks. Of these, “John,” is denominated the SUBJECT; “man,” the PREDICATE; and “is,” the COPULA. To speak generally, and in the language of the grammarians, the nominative of the verb is the subject of the proposition; the substantive, or adjective, which agrees with the nominative, is the predicate, and the verb is the copula.

By a few simple examples, the reader may render familiar to himself the use of PREDICATION, as the grand expedient, by which language is enabled to mark not only sensations and ideas, but also the order of them.[48]

[⁴⁸] The theory of Predication here set forth, stands in need of further elucidation, and perhaps of some correction and addition.

The account which the author gives of a Predication, or Proposition, is, first, that it is a mode of so putting together the marks of sensations and ideas, as to mark the order of them. Secondly, that it consists in substituting one name for another, so as to signify that a certain name (called the predicate), is a mark of the same idea which another name (called the subject) is a mark of.