Summary
This quote implies that a pessimist is someone who constantly imagines worst-case scenarios and focuses on negative possibilities rather than being optimistic. They tend to mentally create situations and environments filled with unhappiness or difficulty, as if building metaphorical dungeons in their thoughts. The quote highlights how pessimists dwell on negative aspects of life and tend to view the world through a lens of hopelessness and despair. Overall, it suggests that a pessimistic mindset constructs self-imposed barriers that hinder joy and progress.