In his youth he adopted the Socratic method of argument, and grew, he tells us in the _Autobiography_, very artful and expert in drawing people, even of superior knowledge, into concessions, the consequences of which they did not foresee, entangling them in difficulties out of which they could not extricate themselves, and so obtaining victories that neither he nor his cause always deserved. But, in a few years, he discovered that these victories were Pyrrhic victories, and he gradually left off this doubtful kind of dialectics, retaining only the habit of expressing himself in terms of modest diffidence, never using when he advanced anything, that might possibly be disputed, the words "certainly," "undoubtedly" or any others that gave the air of positiveness to an opinion, but rather saying "I conceive" or "apprehend" a thing to be so and so; "it appears to me," or "I should think it is so or so" for such and such reasons; or "I imagine it to be so," or "it is so if I am not mistaken." As the chief ends of conversation [he declared] are to _inform_ or to be _informed_, to _please_ or to _persuade_, I wish well-meaning, sensible men would not lessen their power of doing good by a positive, assuming manner, that seldom fails to disgust, tends to create opposition, and to defeat every one of those purposes for which speech was given to us, to wit, giving or receiving information or pleasure. And that Franklin completely succeeded in rooting out the last vestige of dogmatism in his nature we not only have his testimony but that of Jefferson, who was not even born when he resolved to do it. "It was one of the rules which, above all others, made Dr. Franklin the most amiable of men in society," he said, "never to contradict anybody." Long before this, when Franklin was only in his forty-fifth year, James Logan wrote of him to Peter Collinson in these words: "Our Benjamin Franklin is certainly an extraordinary man, one of a singular good judgment, but of equal modesty."