We have maintained that dialectic and rhetoric are distinguishable stages of argumentation, although often they are not distinguished by the professional mind, to say nothing of the popular mind. Dialectic is that stage which defines the subject satisfactorily with regard to the _logos_, or the set of propositions making up some coherent universe of discourse; and we can therefore say that a dialectical position is established when its relation to an opposite has been made clear and it is thus rationally rather than empirically sustained. Despite the inconclusiveness of Plato on this subject, we shall say that facts are never dialectically determined—although they may be elaborated in a dialectical system—and that the urgency of facts is never a dialectical concern. For similar reasons Professor Adler, in his searching study of dialectic, maintains the position that “Facts, that is non-discursive elements, are never determinative of dialectic in a logical or intellectual sense....”[22] What a successful dialectic secures for any position therefore, as we noted in the opening chapter, is not actuality but possibility; and what rhetoric thereafter accomplishes is to take any dialectically secured position (since positive positions, like the “position” that water freezes at 32°F., are not matters for rhetorical appeal) and show its relationship to the world of prudential conduct. This is tantamount to saying that what the specifically rhetorical plea asks of us is belief, which is a preliminary to action. It may be helpful to state this relationship through an example less complex than that of the Platonic dialogue. The speaker who in a dialectical contest has taken the position that “magnanimity is a virtue” has by his process of opposition and exclusion won our intellectual assent, inasmuch as we see the abstract possibility of this position in the world of discourse. He has not, however, produced in us a resolve to practice magnanimity. To accomplish this he must pass from the realm of possibility to that of actuality; it is not the logical invincibility of “magnanimity” enclosed in the class “virtue” which wins our assent; rather it is the contemplation of magnanimity _sub specie_ actuality. Accordingly when we say that rhetoric instills belief and action, we are saying that it intersects possibility with the plane of actuality and hence of the imperative.[23]