[IX]
CLASSIFICATION
Thus far we have spoken of the general principles of composition, and of qualities which are common to all attempts to express thought by written language. There are so many ways, however, in which composition may be employed, that for further consideration it is convenient to divide it into classes. We have come to the place where it is well to serve ourselves with some division of the sorts of writing, just as we before found it well to serve ourselves by the separation of general principles.
Classification is necessary in any study, not only for convenience in handling, but for clearness of conception. If ideas are arranged systematically, they not only are remembered more easily, but their mutual relations are discovered, and their relative values more accurately estimated. It is of importance, however, to recognize that in all investigations classification is not an end, but a means. He who classifies clears the way for future work, either of his own or of others, but he does not necessarily reach anything permanent or effective in itself. The student of botany may analyze and tabulate all the plants in the land; but if he has not reached out toward general truths and fundamental principles, it cannot be said that he has learned much. He has amused himself, perhaps has had a good deal of healthful out-of-door life, and a certain amount of mental gymnastics,—but that is the whole of it. Classification, and especially classification which is not original, is not the attainment of knowledge in any high sense.
I pause to comment upon this at more length than the connection warrants, strictly speaking, because the subject is one of so great general importance. Everywhere in his studies the learner finds classification set up as a ladder by means of which he may climb to knowledge. Most students fall to counting the rungs of the ladder, to measuring the spaces between them, to informing themselves carefully who made it. Unless in the waste of time there is no harm in this, if, after all, the ladder be really used, and if the learner be clear-headed enough to realize that all this is of no more than relative value. Classification is the means by which the mind is able to master a subject, but it is not the subject itself. To classify originally it is necessary to understand the relations of things, and the investigators by whom classes are defined must of course be thoroughly well informed in regard to the facts upon which arrangement is based. The ordinary student is constantly in danger of accepting the formal schedule instead of the truths which it represents; of filling his mind with nomenclature instead of principles; of being, in a word, satisfied with system in place of knowledge.
All essential and ultimate knowledge is natural, and all classification is artificial. Classification is founded upon natural facts, but it is an enumeration rather than an elucidation. It arranges; it does not explain.
Understand that I do not undervalue classification. The student can no more advance without it than he could climb to a roof without a ladder. I merely wish to impress upon you the fact that in all work—and perhaps especially in scientific work—it is of the highest importance to keep steadily in mind that it is not the ladder but the ascent which is of consequence; that the aim is not the schedule but the secrets of wisdom to which it helps us.
Thus it is that it is not for any value in the distinction itself, but solely as an expedient for our convenience in acquiring knowledge which is of worth, that we divide the sorts of composition. We classify, as in microscopy it is necessary to make sections for ease of examination. Do not fail to classify; but do not fail also to remember that nomenclature is not knowledge, that classification is not wisdom.
It is hardly necessary to remark how varied are the effects which writers may endeavor to produce. One is intent simply upon giving a clear and prosaic account of some matter; making a straightforward appeal to the understanding, and not troubling himself to go beyond this. A second is bent upon conveying to his readers some emotion, overpowering or delicate, painful or joyous, as the case may be. A third aims only to amuse; a fourth is determined to convince, to persuade, or to overcome; and so on through the long list of objects which are conceivable as coming within the scope of the writer’s range of intention.