In the delivery of a monologue there is often an object referred to which the interlocutor naturally places on one side, while he locates his listener on the other. Thus, in the unemphatic parts he would turn away and not be continually "nosing his interlocutor" or talking directly to him. This would cause him to give his ideas to the audience directly or indirectly. Whenever he talks emphatically, he would turn toward his interlocutor. When the object referred to is more directly in the field of attention, he would turn toward that.
Ruth McEnery Stuart, for example, is the author of a monologue in which an old countryman talks about his son winning a "diplomy." The speaker in the monologue would naturally locate the diploma on one side and the listener on the other.
It is easy to see that this pivotal action is of great importance on the stage. It is the very basis of all true stage representation. The amateur always "noses" his interlocutor. The artist is able to show all degrees of attention by the pivotal action of the body, and thus reveal to an audience the very rank of the person addressed, whether that consists in dignity of character, which makes him a special object of interest, or in a royal or conventionally superior station.
That the pivotal action of the body in a monologue is especially important can be seen at once. The object of attention is an invisible listener, and the turning of the body to the side not only shows the speaker's own attention, but it helps the auditor to locate the person addressed.
Without this pivotal action, the reader is apt to declaim a monologue, and confuse it with a speech. The monologue is never a direct endeavor to impress an audience. Only occasionally can the audience be made to stand for the person addressed.
Some one will ask, Why at the side? Because if we hold out two objects for an audience to observe, we shall put them side by side. The placing of one before the other will cause confusion or prevent the possibility of discrimination. In art, the law of rhythm, or of composition, demands that objects be distributed side by side in order to win different degrees of attention. A picture of any kind demands such an arrangement of objects as will hold the attention concentrated. An object in the background may aid the sustaining of attention upon something in the foreground. Objects are placed in opposition to cause the mind to alternate from one to the other, and thus to sustain attention until it penetrates the meaning of the smallest scene. This is the soul, not only of pictorial, but of dramatic art.