In Joseph Heller's novel "Catch-22," the character reflects on the complex nature of happiness and morality. The quote "I used to think it was immoral to be unhappy" suggests a struggle between personal feelings and societal expectations. It highlights how the pressure to be perpetually happy can lead to a sense of guilt for experiencing negative emotions.

This idea invites readers to reconsider the conventional belief that unhappiness is inherently wrong. Instead, it suggests that emotions, both positive and negative, are a natural part of the human experience and should not be stigmatized. Heller's work encourages a deeper understanding of the complexities of mental health and the absurdities of life, especially in wartime contexts.