Aristotle's Rhetoric

I hope this clears some of this weeks logos up:

We persuade by the argument itself (logos) when we demostrate or seem to demonstrate that something is the case. For Aristotle, there are two species of arguments: inductions and deductions. Induction is defined as the proceeding from particulars up to a universal. A deduction is an argument in which, certain things having been supposed, something different from the suppositions results of necessity through them or because of thier being ture. The inductive argument in rhetoric is the example; it does not proceed from many particular cases to one universal case, but from one particular to a similar particular if both particulars fall under the same class. The deductive argument in rhetoric is the enthymeme.

The Enthymeme:

The Concept of Enthymeme

For Aristotle, an enthymeme is what has the function of a proof or demostration in the domain of public speech. Since a demonstration is a kind of 'sullogismos.' The concepts 'proof' and 'sullogismos' play a crucial role in Aristotle's logical-dialectical theory. Properly understood, what people call 'enthymeme' should have the form of a sullogismos, i.e. a deductive argument.

Rapp, Christof, "Aristotle's Rhetoric", The Stanford Encyclopedia of Philosophy
(Summer 2002 Edition), Edward N. Zalta (ed.), URL=