The quote reflects deep feelings of isolation stemming from personal history. It suggests that having experiences or a past that is unique and unshared can create a profound sense of loneliness. This theme of solitude due to one's individual journey resonates with many, highlighting how our past shapes our present relationships and sense of belonging.

In Susan Howatch's "The Wheel of Fortune," this idea may serve to underscore the narrative's exploration of personal struggles and the impact of past events on current life. It illustrates how characters might grapple with their histories while trying to connect with others, emphasizing that shared experiences often foster companionship, while unique pasts can sometimes lead to solitude.