Composition is, as the very name indicates, a certain arrangement of the parts of speech, or elements of diction, as some call them. These were reckoned as three only by Theodectes and Aristotle and the philosophers of those times, who regarded nouns, verbs and connectives as the primary parts of speech. Their successors, particularly the leaders of the Stoic school, raised the number to four, separating the articles from the connectives. Then the later inquirers divided the appellatives from the substantives, and represented the primary parts of speech as five. Others detached the pronouns from the nouns, and so introduced a sixth element. Others, again, divided the adverbs from the verbs, the prepositions from the connectives and the participles from the appellatives; while others introduced still further subdivisions, and so multiplied the primary parts of speech. The subject would afford scope for quite a long discussion. Enough to say that the combination or juxtaposition of these primary parts, be they three, or four, or whatever may be their number, forms the so-called “members” (or clauses) of a sentence. Further, the fitting together of these clauses constitutes what are termed the “periods,” and these make up the complete discourse. The function of composition is to put words together in an appropriate order, to assign a suitable connexion to clauses, and to distribute the whole discourse properly into periods.
Although in logical order arrangement of words occupies the second place when the department of expression is under investigation, since the selection of them naturally takes precedence and is assumed to be already made; yet it is upon arrangement, far more than upon selection, that persuasion, charm, and literary power depend. And let no one deem it strange that, whereas many serious investigations have been made regarding the choice of words, — investigations which have given rise to much debate among philosophers and political orators, — composition, though it holds the second place in order, and has been the subject of far fewer discussions than the other, yet possesses so much solid strength, so much active energy, that it triumphantly outstrips all the other’s achievements. It must be remembered that, in the case of all the other arts which employ various materials and produce from them a composite result, — arts such as building, carpentry, embroidery, and the like, — the faculties of composition are second in order of time to those of selection, but are nevertheless of greater importance. Hence it must not be thought abnormal that the same principle obtains with respect to discourse. But we may as well submit proofs of this statement, that we may not be thought to assume off-hand the truth of a doubtful proposition.