In Robin McKinley's book "Chalice," laughter serves as a powerful metaphor, suggesting its enduring nature in contrast to the impermanence of human life. The phrase implies that laughter is a source of light and resilience, akin to sunlight, providing warmth and joy regardless of the transient presence of people around us. This highlights the idea that laughter can create lasting memories and connections, transcending individual moments.

The quote emphasizes how laughter, much like sunlight and stone, carries a weight and permanence in the world. Even when the individuals who share these joyful moments may fade, the laughter itself lingers, creating a sense of continuity and hope. This reflects the deeper themes of the novel, showcasing how human experiences and emotions can leave a profound impact that endures beyond time.