In Act V of Pygmalion, Higgins tells Eliza that the only thing that matters is having the same manner for all humans. How does this help to understand...

Yes, we need to focus on
how Higgins as a character changes throughout this excellent play. He is forced to realise that
he is not able to treat Eliza as a mere object any more, a scientific experiment. Instead, he
comes to realise that he actually harbours feelings for her and that she is an equal not a
subordinate character. The quote you have highlighted signifies the way in which he becomes less
selfish and is forced to look at others and see that treating others the same is not necessarily
possible.