In the dialogue from "Three in Death" by J.D. Robb, there is a playful exchange between two characters about the existence of ghosts. One character expresses a belief in the supernatural phenomenon, while the other dismisses it, attributing the belief to the general eccentricity of people. This highlights a theme of differing perspectives on reality and the supernatural.

The quote reflects a common skepticism towards ghost sightings, suggesting that such experiences are often influenced by the psychological state of individuals. It raises questions about perception and belief, implying that subjective experiences can be shaped by one's mental disposition. The humor in the conversation adds an element of lightness to a topic that is often taken seriously by some.