Explanation: A doctrine is the set of teachings that are based on a belief system. It deals with the existing principles on a specific subject, usually with a claim of universal validity. An example of a famous doctrine is the Christian among other religious groups that also have their particular set of rules.
On the given text the emotions that Walter puts explains how
he feels about himself, stating that “So you butchered up a dream of
mine—you—who always talking 'bout your children's dreams”
