Hey i was wondering what kind of grade this answer would be:
Throughout the play, we are constantly reminded of the key theme 'social responsibility' as it is the moral of the story.
Priestley presents Mr Birling as a caricature of a typical capitalist business man, who is heartless and ruthless, only concerned with himself and his wealth. We as an audience find it hard to sympathise with Mr Birlings opinions and instantly devalue his myopic ways of life.
Priestley suggests we should feel that socialists, such as himself are to be respected and valued as they very much value the idea of social responsibility who differs from Mr birling as he fails to learn the Inspectors and Priestleys lesson of social responsibility.
This infuriates the Inspector as he declares that his lesson will be 'taught in fire and blood and anguish'. The use of a polysyndetic list accentuates that each noun carries an equal importance creating an analogy, as Priestley believes lower classes have an equal value of those of the upper class despite the evident polarity in treatment between the bourgeoisie and the proletariat. Priestley is insinuating that Mr Birlings unforesifhtful view of life, where we act alone, is incorrect and instead uses the inspector to narrate his own views to the audience. By creating the inviolable message that 'we don't live alone, we are members of one body, we are responsible for each other' teaches the audience a new meaning of life. The use of anaphora with the repetition of the noun 'we' encapsulates the importance of Priestleys message as caring for each other is key to a good healthy society.
An alternative interpretation suggests that the noun 'body' suggests society is like a human body that can't function without an organ, in the same way our society cannot function without socialism and equality.