Question

Who says the following and why?

"The great secret . . . is not having bad manners or good manners or any other particular sort of manners, but having the same manner for all human souls: in short, behaving as if you were in Heaven, where there are no third-class carriages, and one soul is as good as another. "



*Pickering is trying to convince Higgins to be more polite.
*Mrs. Higgins is trying to convince Higgins to be more polite.
*Higgins is telling Eliza that it's okay to treat people badly as long as you treat everybody badly.
*Eliza is desperately pleading to Higgins for him