2.Materialists do not oppose utilitarianism ingeneral but the utilitarianism of the feudal, bourgeois and petty-bourgeois classes; they oppose those hypocrites who attack utilitarianism in words but in deeds embrace the most selfish and short-sighted utilitarianism.
3.Major Barbara reveals ruthlessly the social evils under the bourgeoissystem mainly through the conflict between the two protagonists Barbara and her father Undershaft.