In Cormac McCarthy's novel "The Road," the protagonist struggles with rest, experiencing both a lack of sleep and its poor quality. This reflects the harrowing environment and emotional turmoil he faces while navigating a post-apocalyptic world with his young son. The scarcity of sleep further illustrates the character's persistent anxiety and the weight of survival in a desolate landscape.

The quote highlights the impact of constant uncertainty on the human psyche. As the characters confront the grim realities of their existence, the challenges they endure prevent them from finding solace or peace, emphasizing the profound effects of their circumstances on mental and physical well-being.