Rue, often symbolizing regret, is a feeling of sorrow or remorse for something that has happened or been done. It can arise from missed opportunities, poor decisions, or actions that have caused harm to oneself or others. This emotion can lead to a deep sense of longing for a different outcome or a desire to change the past. In literature and art, rue is frequently depicted as a powerful theme, reflecting the human experience of loss and the consequences of choices. Characters may grapple with their regrets, leading to personal growth or further despair. The concept of rue is often explored in works involving Shakespeare, Greek tragedies, and various forms of poetry.