In "In Sunlight and in Shadow," Mark Helprin contemplates the nature of the human soul, suggesting that it is a complex and multifaceted entity. The phrase "Souls are complicated things" encapsulates this idea, highlighting the depth of human emotions, experiences, and individuality. Helprin’s narrative weaves through the intricacies of life, love, and the struggles that shape one's character, reminding readers that understanding oneself and others requires delving into these complexities.

Through rich storytelling, Helprin invites readers to explore their own souls while navigating the challenges and beauty of existence. The quote serves as a poignant reminder that each person carries a unique set of experiences and emotions that inform their actions and relationships. In doing so, the author encourages a profound reflection on the nature of identity and the connections that bind us as human beings.