In Paul Bowles' novel "The Sheltering Sky," the quote reflects on human vulnerability in the face of the immense universe. It suggests that while we seek protection and comfort, we are ultimately fragile beings navigating a vast, indifferent cosmos. The notion of a "sheltering sky" implies a temporary refuge, hinting at the precariousness of our existence.

This contrast between the shelter provided by the sky and the overwhelming darkness of the universe emphasizes our smallness and insignificance. It serves as a reminder of the deeper, often unsettling truths about life, exploring themes of isolation and the search for meaning in a world that can feel cold and expansive. Bowles captures the essence of human fragility amidst the grand scale of existence.