An Inspector Calls by J.B Priestly - How does the play show up the contrasts between the philosophies of Arthur Birling and Inspector Goole?

Arthur Birling and Inspector Goole's philosophies on life and society contrast throughout the play. For most of the play Sheila, Eric and Mrs Birling are fully behind Mr Birling and his philosophies, but towards the end of the play, Eric and Sheila effectively switch sides and begin to back Inspector Goole's philosophies on life and society.
Mr Birling is a strong believer in stratas and classes in society; he believes he is in the upper class. In act 1, Mr Birling says "I'm still on the bench. It may be something about a warrant". This shows that he does put in some effort and do his…