In Rebecca Goldstein's novel "Properties of Light," the exploration of human connections takes center stage, particularly how physical relationships can differ from deeper emotional bonds. The quote reflects on the dichotomy between the physical and the spiritual aspects of love, emphasizing that while one may have intimacy with someone's body, understanding their inner self—their soul—remains elusive. This underscores the idea that true connection goes beyond surface interactions.

The sentiment expressed in the quote suggests a profound loneliness that accompanies the journey of knowing another person. It posits that the soul is a complex and solitary aspect of identity, often leaving individuals feeling isolated even in close relationships. Goldstein's work thus invites readers to reflect on the nature of love, intimacy, and the inherent challenges in truly understanding one another on a deeper level.