295 We have already observed the following remarkable things in the process of naming: 1, Assigning names of those clusters of ideas called objects; as man, fish; 2, Generalizing those names, so as to make them represent a class; 3, Framing adjectives by which minor classes are cut out of larger.
Those adjectives are all names, of some separate portion of a cluster, and are, therefore, all instruments of abstraction, or of that separating one or more of the ingredients of a complex idea from the rest, which has received the name of Abstraction. One purpose of Abstraction, therefore, is the formation of those sub-species, the formation of which is required for certain purposes of speech.
These observations will be rendered familiar by examples. We say, tall man, red flower, race horse. In my complex idea of a man, or the cluster of ideas of sense to which I affix that mark, are included, certain ideas of colour, of figure, size, and so on. By the word tall, I single out a portion of those ideas, namely, the part relating to size, or rather size in one direction, and mark the separation by the sign or name. In my complex idea of a flower, colour is always one of the ingredients. By applying the adjective red, I single out this one from the rest, and point it out for peculiar consideration. The explanation is obvious, and need not be pursued in a greater number of instances.
Words of this description all denote differences; either such as mark out species from genera, or such as mark out individuals from species. Of this latter sort the number is very small; of which the reason is obvious; individual differences are too numerous to 296 receive names, and are marked by contrivances of abridgment which will be spoken of hereafter.
To explain this notation of differences; the same examples will suffice. In the phrase “tall man,” the adjective “tall” marks the difference between such a man, and “short man,” or “middle-sized man.” Of the genus man, tall men are one species; and the difference between them and the rest of the genus is marked by the word tall. Of the genus flower, red flowers form a species, and the difference between them and the rest of the genus is marked by the adjective red. Of the genus horse, race horse forms a species, and the difference between this species and the rest of the genus is marked by the word race.
It is of importance further to observe, that adjectives singling out ideas which are not differences, that is, ideas common to the whole class, are useless: as, tangible wood; coloured man; sentient animal. Such epithets express no more than what is expressed by the name without them.
Another thing requiring the attention of the student is the mode in which these differential adjectives are generalized. As the word man, applied first to one individual, then to another, becomes associated with every individual, and every variety of the species, and calls them all up in one very complex idea; so are these adjectives applied to one class after another, and by that means at last call up a very complicated idea. Let us take the word “black” for an example; and let us suppose that we apply this adjective first to the word man. We say “black man.” But we speedily see that for the same reason for which we say black man we may say black horse, black cow, 297 black coat, and so on. The word black is thus associated with innumerable modifications of the sensation black. By frequent repetition, and the gradual strengthening of the association, these modifications are at last called up in such rapid succession that they appear commingled, and no longer many ideas, but one. Black is therefore no longer an individual but a general name. It marks not the particular black of a particular individual; but the black of every individual, and of all individuals.[81] The same is the case 298 with all other words of the same class. Thus I apply the word sweet, first to the lump of sugar in my mouth, next to honey, next to grapes, and so on. It thus becomes associated with numerous modifications of the sensation sweet; and when the association is sufficiently strengthened by repetition, calls them up in such close succession, that they are converted into one complex idea. We are also to remember, that the idea and the name have a mutual power over one another. As the word black calls up the complex idea, so every modification of black calls up the name; and in this, as in other cases, the name actually forms a part of the complex idea.
[81] The example which the author has here selected of a general name, sets in a strong light the imperfection of the theory of general names, laid down by him in the preceding chapter. A name like “black,” which marks a simple sensation, is an extreme case of the inapplicability of the theory. Can it be maintained that the idea called up in our minds by the word black, is an idea compounded of ideas of black men, black horses, black cows, black coats, and the like? If I can trust my own consciousness, the word need not, and generally does not, call up any idea but that of a single black surface. It is still not an abstract idea, but the idea of an individual object. It is not a mere idea of colour; it is that, combined with ideas of extension and figure, always present but extremely vague, because varying, even from one moment to the next. These vague ideas of an uncertain extension and figure, combined with the perfectly definite idea of a single sensation of colour, are, to my consciousness, the sole components of the complex idea associated with the word black. I am unable to find in that complex idea the ideas of black men, horses, or other definite things, though such ideas may of course be recalled by it.
In such a case as this, the idea of a black colour fills by itself the place of the inner nucleus of ideas knit together by a closer association, which I have described as forming the permanent part of our ideas of classes of objects, and the meaning of the class-names.—Ed.
The next thing, which I shall observe, deserves in a high degree, the attention of the learner. In the various applications of that species of marks which we are now considering, they are associated with two distinguishable things; but with the one much more than the other. Thus, when we say black man, black horse, black coat, and so of all other black things, the word black is associated with the cluster, man, as often as black man is the expression; with the cluster horse, as often as black horse is the expression, and so on with infinite variety: but at the same time that it is associated with each of those various clusters, it is also associated with the peculiar sensation of colour which it is intended to mark. The CLUSTERS, therefore, with which it is associated, are variable; the PECULIAR SENSATION with which it is associated is invariable. It is much more constantly, and therefore much more strongly associated with the SENSATION than with any of the CLUSTERS. It is at once a name of the clusters, and a name of the 299 sensation; but it is more peculiarly a name of the SENSATION.