How would you characterize Frederic Henry’s emotional development over the course of the story?

Frederic begins the novel with no particular emotional attachments to anyone or thing. Though he is in the Italian army and has friends there they do not touch him deeply. His relationships with women are limited to whorehouses and drunken one-night-stands while on leave. Catherine Barkley, however, causes him to feel more deeply than he has previous and he soon discovers, much to his surprise, that he is in love with her. His feelings for her develop until he knows the devout type of deeper love espoused by the priest and Count Greffi. This development reaches its climax when he begins praying to God for her survival. When she dies in childbirth he is left empty, alone and weary of the world. He has known the joy of love but also the sadness of mortality and he is wiser for it.