Does language itself has transformative power ? Or does power come to people who use it ?

In this play and in British society at large, language is closely tied with class. From a person's accent, one can determine where the person comes from and usually what the person's socioeconomic background is. Because accents are not very malleable, poor people are marked as poor for life. Higgins's teachings are somewhat radical in that they disrupt this social marker, allowing for greater social mobility.I think the story speaks to language belonging to the class or people that use it. If Eliza changes it is not simply because of her diction.