In William Faulkner's book "The Reivers," the quote highlights the distinction between a person's external reality and their inner self. It suggests that one's physical surroundings and possessions are merely superficial aspects of existence. While we may live and sleep in certain environments, these do not define our identity or our actions. Instead, they are just the backdrop of our lives.

Faulkner's perspective prompts readers to reflect on the deeper facets of human existence. It challenges us to consider that our true essence is not inherently tied to our material possessions or where we reside. Rather, it emphasizes the notion that our character and choices hold greater significance than the physical confines of our day-to-day lives.