Bruno expresses his frustration about fairness and rules, claiming that he is punished for mistakes while adults seem to avoid consequences despite enforcing strict rules on children. His irritation highlights a sense of injustice and confusion about why rules apply unequally based on age.
He feels that adults, who create and enforce rules, often do not follow them themselves, which seems unfair to him. This discrepancy between the rules for children and the behavior of adults creates confusion and resentment in Bruno, reflecting a common theme of innocence and a search for justice.