Henry Higgins, forty years old, is a bundle of paradoxes. In spite of his brilliant intellectual achievements, his manners are usually those of the worst sort of petulant, whining child. He is a combination of loveable eccentricities, brilliant achievements, and devoted dedication to improving the human race. Yet he is completely socially inept; his manners are so bad that his own mother does not want him in her house when she has company, and his manners are so offensive that she will not attend the same church at the same time. Since manners have always been the subject matter of comedies from the time of Aristophanes, Higgins' view of manners differs greatly from his own actions. His use of phonetics to make a flower girl into a duchess does not mean that the play is about phonetics; the play concerns different definitions of manners, and thus Higgins' actions must be taken fully into account.
Henry Higgins is a confirmed bachelor, and this fact alone should rule out all popularizers who would create a romantic entanglement between Higgins and Eliza. In addition, he is so set in his ways that he announces to Eliza that if someone doesn't want to get run over, they had better get out of his way. To accomplish his aims, he will trample on anyone's feelings — whether that person be a flower girl in Covent Garden or a real duchess or a lady in his mother's elaborate drawing room. Thus, one of Higgins' claims to equality is not that he doesn't have manners (it is a foregone conclusion that he has none), but that he treats all people alike. However, he only thinks that he does; he is not as egalitarian and democratic as he likes to think that he is. When Higgins first meets Eliza in Covent Garden and is taking down her vocal sounds, he is extremely clever — so clever, in fact, that his horribly bad manners are accepted by the audience as being clever. In his tirade against Eliza, when he vents his wrath against her, we tend, on first hearing his tirade, to forgive him because he has such an admirable command of the English language as he simply rips to pieces a "guttersnipe" and "a squashed cabbage leaf." Note his superb language: "A woman who utters such depressing and disgusting sounds has no right to be anywhere — no right to live. Remember that you are a human being with a soul and the divine gift of articulate speech . . . don't sit there crooning like a bilious pigeon." Anyone who can deliver such splendid invective is admired for his or her brilliant, spontaneous use of the English language, and especially when it is directed against so lowly a person as this flower girl from the slums. But in a play dealing with manners, no proper gentleman would utter such condemnations. Later, we find out that Colonel Pickering treated Eliza properly from the very first. Thus, in spite of Higgins' claiming to treat all people with the same manners, he certainly does not treat Mrs. Eynsford-Hill and Clara with such a display of invective, and both of these characters represent everything that Higgins abhors; they represent the worst sort of upper-middle-class hypocrisy that both he and Doolittle despise. But in spite of his bad manners, Higgins is clever, and we do admire his cleverness, even at the expense of a flower girl.
Why else do we like Higgins? Because he is Shaw's creative rebel who floats through many of Shaw's dramas. Higgins rejects middle-class moralities. He admires do-nothing Doolittles for their honesty in asserting that they are the undeserving poor, he will devote his scientific skill to changing a flower girl into a duchess, he is ultimately interested in the soul of his creation (Eliza-Galatea) and not in her pronunciation, and he is devoted to improving the human race by his own scientific methods. And, last, we cannot deny his charm: Mrs. Pearce, his housekeeper, has often threatened to leave because of Henry's atrocious manners (improper language, improper dress, bad table behavior, etc.), but she is always charmed by him into remaining with him. Ultimately, Eliza is also so charmed by her association with Higgins (and Pickering) that she does not want to live with someone else. But if Higgins is charming, he is also a tyrannical bully; if he is devastatingly intelligent, he is also ignorantly insensitive to the feelings of others; if he is god-like in his achievements, he is childishly petulant in his wanting his own way; if he believes in his scientific methodology, he is also something of the intuitive poet; and if he is a man so confident of his aim in life, he is also a man so ignorant of his own personality that he really thinks himself timid, modest, and diffident. Thus, his appeal remains partly in the many contradictions that he is heir to.