But the art of sophistry, which the Greeks cultivated, is a fantastic power, which makes false opinions like true by means of words. For it produces rhetoric in order to persuasion, and disputation for wrangling. These arts, therefore, if not conjoined with philosophy, will be injurious to every one. For Plato openly called sophistry “an evil art.” And Aristotle, following him, demonstrates it to be a dishonest art, which abstracts in a specious manner the whole business of wisdom, and professes a wisdom which it has not studied. To speak briefly, as the beginning of rhetoric is the probable, and an attempted proof the process, and the end persuasion, so the beginning of disputation is what is matter of opinion, and the process a contest, and the end victory. For in the same manner, also, the beginning of sophistry is the apparent, and the process twofold; one of rhetoric, continuous and exhaustive; and the other of logic, and is interrogatory. And its end is admiration.