I don't come into this suicidebusiness - blame and responsibility
uses semanticfield of 'business' to distance himself from responsibility of Evas suicide - shows preoccupation with money and wealth viewing everything through the lens of finance thus portraying him as callous
you seem to be a nice well-behaved family - socialism vs capitalism
ironic as we learn this isn't the case - explores how wealth and reputation are valued over morality by 1912 society
everything's all right now, sheila. (holds up the ring) what about this ring? - blame and responsibility
wants to rid himself of responsibility by erasing events of the evening - metonymy of 'ring' exposes materialistic and capitalist views - seems less emotionally invested in marriage now than the start of the play