Represents the cold-heartedness of the older generation and capitalism
Embodies the ruling class society
Lacks compassion or empathy towards anyone but themselves
Mrs. Birling is described as "a rather cold woman….her husband's social superior"
The specific reference to Mrs Birling as her husband's "social superior" establishes her privilege and stature in society
The adjective "cold" evokes a lack of warmth and intimacy of affection or empathy, and can also be seen to symbolize the hard-hearted attitude of the upper class towards the less fortunate lower classes