Folly, or foolishness, refers to a lack of good sense or judgment. It often manifests in actions or decisions that are unwise or irrational, leading to negative consequences. People may act foolishly due to ignorance, impulsiveness, or emotional influences, which can cloud their reasoning. In literature and philosophy, folly is frequently explored as a theme. For example, William Shakespeare often depicted folly in his characters, highlighting the contrast between wisdom and foolishness. Additionally, folly can serve as a cautionary tale, reminding individuals of the importance of critical thinking and self-awareness in decision-making.