Urges the characters (and the audience) to consider their social responsibility, arguing individuals have a civic duty to ensure their actions must benefit the whole of society
While the Inspector alludes to ideas of responsibility and duty, Arthur and Sybil also repeatedly use these words though they interpret them in very different ways
Priestley used the play to argue that the economic system of Capitalism prevented equality and social justice and that another system, Socialism, would be fairer for all
Priestley presents the Birlings and Capitalism in a negative light: they are individualistic, self-centered and amoral, placing profit and greed above the rights and concerns of others
Priestley seeks to expose this selfishness and to encourage others to look after one another and to work towards a society where all members are treated more equally and fairly
Younger characters are more open to social and economic change, and as a result are in conflict with their parent's generation, who are stuck in their ways