In Ian McEwan's book "Nutshell," a significant quote from Confucius highlights the destructive nature of revenge. The saying implies that seeking vengeance not only harms the target but also the perpetrator, suggesting that such actions often lead to a spiral of negativity that can engulf both parties. The imagery of preparing two graves underlines the idea that revenge entails personal loss and sorrow, emphasizing the futility of such desires.

The narrative further explores how revenge unravels the fabric of society. McEwan argues that the thirst for retribution can lead to chaos, undermining trust and the delicate balance that maintains civilization. By illustrating the implications of revenge, he invites readers to reflect on the broader consequences of their actions, encouraging a move towards forgiveness and understanding rather than destruction.