Selfishness is the antipode of Priestley's Socialist ideals, it is presented as the downfall of man, and the corrupting force of civilisation. Throughout the morality play, Selfishness is to be blamed for all of the Birling's sins, and as a consequence, Eva Smith takes her own life, drinking 'disinfectant' to purify herself, and cleanse herself of the Birlings' influence. The audience is made to condemn selfishness, as the devastating repercussions of the Birlings makes the audience recognise the need for change in a selfish society.