in practice [people] do not always think "rationally" and sometimes respond to emotional rhetoric over rational dialect. — IvoryBlackBishop

For this reason, some philosophers such as Plato were vehemently opposed to rhetoric, seeing it as manipulative sophistry without regard for truth, in contrast with the logical, rational dialectic that he and his teacher Socrates advocated. His student Aristotle, on the other hand, had a less negative opinion of rhetoric, viewing it as neither inherently good nor bad but as useful toward either end, and holding that because many people sadly do not think in perfectly rational ways, rhetorical appeals to emotion and character and such are often necessary to get such people to accept truths that they might otherwise irrationally reject. I side much more with Aristotle's view on this matter, viewing logic and rhetoric are complimentary to each other, not in competition. I like to use an analogy of prescribing someone medicine: the actual medicinal content is most important of course, but you stand a much better chance of getting someone to actually swallow that content if it's packaged in a small, smooth, sweet-tasting pill than if it's packaged in a big, jagged, bitter pill. In this analogy, the medicinal content of the pill is the logical, rational content of a speech-act, while the size, texture, and flavor of the pill is the rhetorical packaging and delivery of the speech-act. It is of course important that the "medicine" (logic) be right, but it's just as important that the "pill" (rhetoric) be such that people will actually swallow it. — The Codex Quaerentis: On Rhetoric and the Arts

I've found that I agree with you 75% of the time or so on the art stuff — Noble Dust