The Controlling Purpose

by Mervin James Curl

What, then, is the controlling purpose? It is the answer to the question, “What am I trying to accomplish?” It is the intelligent determination on the writer’s part to make the material of his writing march straight toward a definite goal which he wishes the reader to perceive. It is the actively operating point of view of the writer, the positive angle of vision that he takes toward the subject.

The controlling purpose in Lincoln’s mind as he rode up to Gettysburg must have been to bring home to the civilians of the country, with a great humble thrill toward accomplishment, the fact that after the soldiers had done all they could, the civilians must reverently take up the fight for freedom and union. His address is immortal. But suppose, for a moment, that he had ascended the platform with the vague idea of “saying something about America, the war, you know, and the soldiers, and liberty,—oh, yes, Liberty, of course,—and, oh, things in general.” Though he had thundered for hours his words would likely have been ineffective. Only an intense realization of the purpose in one’s mind, and a consistent bending of one’s efforts to gain this end, bring simplicity, weightiness, and the powerful effect in the reader’s mind. From the reader’s point of view, in fact, we might say that the controlling purpose is the means of making writing interesting, since nothing so holds a reader’s mind as to feel that he is getting somewhere, that he is accomplishing something by his efforts. In no other way can he be made so clearly to see his progress, for only thus can he be prevented from undirected wandering.

From Expository Writing by Mervin James Curl (1919)