Enthymemes are formed from (1) probabilities; (2) signs. Signs are of two kinds: (1) necessary (tekmēria); (2) unnecessary, which have no distinctive name, and are related (a) as particular to universal, (b) as universal to particular. The example defined. Enthymemes are of two kinds: those which are deduced from (1) general truths, (2) special truths—from general or special “topics” or commonplaces. (iii) There are three kinds of rhetoric, corresponding to the three kinds of hearers; for the hearer