Arthur Birling is the primary embodiment of capitalist ideology, consistently prioritising his business interests, profits, and social standing above all else. He dismisses workers' demands for higher wages as a threat to his profits and views people as mere 'cheap labour'.
Birling's speeches are filled with dramatic irony, as his confident predictions about the future (e.g., the unsinkable Titanic, lasting peace) are known by the audience to be false. This technique undermines his capitalist worldview and portrays it as short-sighted and dangerous.
Gerald Croft, though initially more sympathetic, ultimately aligns with the capitalist mindset by reverting to his concern for reputation and avoiding scandal once the Inspector's authenticity is questioned. His exploitation of Eva Smith, though framed as 'chivalry', serves his own desires and convenience.
Sybil Birling represents the callous indifference of the upper class, whose privilege blinds them to the suffering caused by the capitalist system. Her refusal of charity to Eva Smith, based on class prejudice, exemplifies the lack of empathy inherent in an individualistic society.
Priestley's primary intention is to expose the moral failings of unchecked capitalism and advocate for a more socialist society. He uses the play as a didactic tool to persuade his audience, particularly the post-WWII generation, to adopt principles of social responsibility.
The play aims to encourage a shift from an individualistic, self-centred worldview to one that values community, empathy, and collective welfare. Priestley believed that a society where people looked after one another would prevent the kind of tragedies that befell Eva Smith.
By setting the play in 1912 but writing it in 1945, Priestley highlights the dangers of repeating past mistakes and urges his contemporary audience to build a better, more equitable future. The Inspector's final warning about 'fire and blood and anguish' can be seen as a reference to the two World Wars, which Priestley attributed to the failures of capitalist societies.
The message is a call to action, urging both individual introspection and broader societal reform. Priestley suggests that true progress is measured not by economic prosperity for a few, but by the well-being and fair treatment of all members of society.
The play dramatically contrasts the Birlings' opulent, insulated life with Eva Smith's wretched existence, directly linking the former's prosperity to the latter's suffering. This visual and narrative juxtaposition underscores the inherent injustice of the capitalist system.
The dialogue frequently highlights the clash between Arthur Birling's individualistic rhetoric ('a man has to look after himself') and the Inspector's communal philosophy ('we are members of one body'). These opposing viewpoints form the ideological backbone of the play's conflict.
Priestley uses the generational divide to illustrate the potential for change, contrasting the entrenched capitalist views of the older Birlings and Gerald with the more open-minded and remorseful attitudes of Sheila and Eric. This suggests that hope for a socialist future lies with the youth.
The play's structure, with the Inspector systematically revealing each character's connection to Eva, serves to demonstrate how individual capitalist actions collectively contribute to systemic social problems. This 'chain of events' metaphor is central to Priestley's critique.