Conventional people are roused to fury by departure from convention, largely because they regard such departure as a criticism of themselves.

Summary

This quote suggests that conventional individuals become deeply angered when someone deviates from social norms or expectations, primarily because they perceive it as a personal attack. When people choose to not conform to conventional standards, it is seen as a direct criticism of the conventional person's own choices and lifestyle. This reaction arises from a sense of insecurity and defensiveness, as any departure from convention challenges the status quo and forces individuals to confront their own decisions.