Another Quote

...just popped up. From John Stuart Mill:

"He who knows only his own side of the case, knows little of that. . . . Nor is it enough that he should hear the arguments of adversaries from his own teachers, presented as they state them, and accompanied by what they offer as refutations. This is not the way to do justice to the arguments, or to bring them into real contact with his own mind. He must be able to hear them from persons who actually believe them; who defend them in earnest, and do their utmost for them. He must know them in their most plausible and persuasive form; he must feel the whole force of the difficulty which the true view of the subject has to encounter and dispose of, else he will never really possess himself of the portion of truth which meets and removes that difficulty."