The most striking aspect of book one in Aristotle’s On Rhetoric is that we are once again presented with a new classification and purpose of Rhetoric. According to Aristotle, “Rhetoric is an antistrophos to dialectic; for both are concerned with such things as are, to a certain extent, within the knowledge of all people and belong to no separately defined science” (30). Part of the reasoning for this is because speakers often need both to reach the desired end.