It's not a question of good manners, or bad manners, or any particular sort of manners. It's having the same manner for every human soul.
While Henry Higgins is being hypocritical here, since he certainly treats Colonel Pickering better than anyone else, this is one of the few instances in My Fair Lady when he makes a thought-provoking point. In this case it applies quite well to the debate swirling around the double standard in gender and sports. Obviously there are strong cultural remnants of the idea that women should be 'ladylike' and thus their bad behavior on the field or court is treated differently than that of men, which is often excused by using buzzwords like 'competitive' or 'aggressive.' These terms are positive when applied to men but negative when applied to women. In return, the answer chosen by many feminist commentators is to point out the hypocrisy of this position, full stop. That's one way of being fair. Unfortunately, the catch-22 of pointing out 'well, men do this thing all the time' is that the stereotypical male standard...sucks. Another major tenet of feminism is that the patriarchy hurts men, too. Look at how poorly the behavior that's lauded on the field serves them in becoming fully realized human beings. Look at Hines Ward suggesting that Ben Roethlisberger is less than manly for not playing through a concussion. Look at Roethlisberger himself and the countless other athletes who have been charged with rape in recent years. Obviously the women who are the victims in these situations have it much, much worse, but I strongly doubt most men wake up in the morning and say 'I'd like to be a rapist.' The sad thing is, thanks to the culture of masculinity, most of them won't even realize they are, even if they go to court.
But we don't have to be talking about major crimes to address the toxic sporting culture in a fair way. Elizabeth Lambert, meet Alex Ovechkin, who's just been suspended for a dangerous knee-to-knee check which injured both him and the other player, and has announced that the suspension "might make him more angry." Here we have two athletes who acted like jerks. The reaction to what they did will be totally different, because we of the aforementioned serious problem with the double standard. But after acknowledging and decrying that, we still have two athletes who acted like jerks. And for my purposes what's important is that their own reactions have been different, because, quite frankly, one of them has been taught to think about what she's done (while at the same time noticing sexism in the response), and the other has been taught that anything goes in the pursuit of athletic success. My bugbear is that I would rather Ovechkin be held to the stereotypical woman standard than vice versa. Athletes should play fair, even if it means being less 'competitive,' because in the end they're playing a game. There are many women who are as temperamentally aggressive, impulsive, and selfish as most male athletes are trained to be. These qualities are often used interchangeably with those which women actually use to break out of their sexist roles, such as independence and strength. But they're not the same, and they don't even make for winning sports psychology. It stands to reason that there are also many men for whom these qualities do not come particularly naturally. And if male athletes were taught like their female counterparts to have a little more regard for others,* we'd have a better world for them and everyone else.
*Yes, the patriarchal standard means women are taught to be self-effacing and self-sacrificing and put other people first in every situation. That's not what I'm advocating. All of us could stand to face the world with a little more compassion.