This quote from Barbara Kingsolver's The Bean Trees poignantly captures the hidden depths and complexities that lie beneath individuals' outward appearances. The metaphor of 'scratching somebody's surface' suggests a superficial engagement with people, where one only sees the exterior, the visible layer of someone's personality or life story. However, the moment one goes deeper—peeling back the layers—one uncovers 'ghost stories': the hidden traumas, experiences, and histories that shape a person but remain obscured to casual observers.

This resonates with the idea that everyone carries their own set of memories, fears, regrets, and unresolved issues, which often remain unspoken or unseen. It reminds us to approach others with empathy and openness, recognizing that what meets the eye is just a fraction of the full story. It challenges us to move beyond judgment and quick conclusions, understanding that beneath every exterior is a complex narrative marked by struggles and triumphs.

In a broader sense, the quote can also be read as a commentary on human connection and the richness of personal histories. It suggests that intimacy or true understanding comes from the willingness to explore these 'ghost stories'—the past wounds and hidden truths that subtly influence the present. It's a call to honor the unseen aspects of others and to remain curious about the stories that shape them, fostering compassion and deeper bonds in the process.

Overall, the imagery and message speak to the universal human experience of concealed pain and the importance of sensitivity when interacting with others, reminding us of the dual nature of visibility and invisibility in people's lives.