How do the actions of the narrator in James Hurst’s story demonstrate the theme that pride can lead to both life and death?

Throughout this story, the narrator allows his pride to cloud his compassion and blind him to Doodle's limitations. He is too proud to accept having a disabled brother, and this is why he takes every measure he can to teach Doodle to do able-bodied things. Because of his pride, he does these things more with his own benefit in mind than his brother's. This story is a clear condemnation of blinding and debilitating pride, since the narrator's pride brings about the eventual death of Doodle.