In John Irving's novel "The Fourth Hand," the protagonist grapples with self-reflection and uncertainty about his own character. He questions whether he is genuinely nice or if that perception is merely an illusion. This inner dialogue highlights a common human dilemma, as many individuals struggle with self-perception and the authenticity of their behavior in relation to others.

The quote underscores the complexity of understanding oneself, suggesting that our self-assessment is often clouded by doubt. It emphasizes the universal uncertainty that exists within everyone, prompting readers to contemplate the true nature of kindness and whether we can ever fully comprehend our impact on others.