In "Precious and Grace," Alexander McCall Smith explores the theme of forgiveness and its importance in personal well-being. He suggests that holding onto feelings of anger and the desire for revenge only perpetuates negativity in one's life. Instead of finding peace, the fixation on punishment can lead to a cycle of resentment that hinders emotional growth.

The quote signifies that focusing on revenge does not bring about any positive outcome. It prompts readers to reflect on how their thoughts and actions can either contribute to their happiness or keep them trapped in a cycle of bitterness. Forgiveness, according to McCall Smith, is essential for moving forward and achieving emotional freedom.