The quote reflects the idea that individuals encompass more than just their physical and mental attributes. It suggests that there is an additional element, perhaps a spirit, that contributes to one's identity and potential. This spirit implies that there is room for growth and improvement, hinting at an inherent promise within each person.

In this context, Jodi Picoult's "Keeping Faith" explores the concept of human potential and the unseen qualities that drive us to become better versions of ourselves. It emphasizes the belief that every individual possesses a unique essence that motivates change and development beyond mere existence.