Rhetoric is the counterpart of Dialectic.
Both alike are concerned with such things as come, more or less, within the general ken of all men and belong to no definite science. Ordinary people do this either at random or through practice and from acquired habit. Now, the framers of the current treatises on rhetoric have constructed but a small portion of that art. These writers, however, say nothing about enthymemes, which are the substance of rhetorical persuasion, but deal mainly with non-essentials. The arousing of prejudice, pity, anger, and similar emotions has nothing to do with the essential facts, but is merely a personal appeal to the man who is judging the case.