What metaphors are used in Love! Valour! Compassion! by Terrence McNally?

There is an underlying metaphor of compassionate. To be compassionate means to share the suffering of someone else and to want to aid and support that person. Compassion, in many ways, is the feeling that bonds Gregory and his friends together. Gregory has compassion for Bobby's blindness, helping when needed and giving him his space and freedom the rest of the time. When Bobby's sister is killed, Gregory is prepared to drop everything to be at Bobby's side with his family in Texas. Everyone has compassion for Buzz, whose HIV-positive condition is stable but precarious. Though he might drive them all mad from time to time with his constant barrage of show tunes and biting sarcasm, they sympathize with his condition and even encourage his antic behavior. They even accept John into their midst, despite the fact that he is overly critical, darkly humored, and willing to pry into their private diaries to learn about their secrets and thoughts.