Well, how they all took on! They crowded around the doctor and tried to quiet him down, and tried to explain to him and tell him how Harvey 'd showed in forty ways that he WAS Harvey, and knowed everybody by name, and the names of the very dogs, and begged and BEGGED him not to hurt Harvey's feelings and the poor girl's feelings, and all that. But it warn't no use; he stormed right along, and said any man that pretended to be an Englishman and couldn't imitate the lingo no better than what he did was a fraud and a liar. The poor girls was hanging to the king and crying; and all of a sudden the doctor ups and turns on THEM. He says:
"I was your father's friend, and I'm your friend; and I warn you as afriend, and an honest one that wants to protect you and keep you out of harm and trouble, to turn your backs on that scoundrel and have nothing to do with him, the ignorant tramp, with his idiotic Greek and Hebrew, as he calls it. He is the thinnest kind of an impostor – has come here with a lot of empty names and facts which he picked up somewheres, and you take them for PROOFS, and are helped to fool yourselves by these foolish friends here, who ought to know better. Mary Jane Wilks, you know me for your friend, and for your unselfish friend, too. Now listen to me; turn this pitiful rascal out – I BEG you to do it. Will you?" (25.51, 25.52)
Twain uses one or two intelligent and perceptive characters throughout the story to emphasize the foolishness of everyone else, particularly that of the mob. Rules of logic, morality, and ethics are still in tact... it’s just that not everyone sees things rationally or morally.