In "The Invention of Wings," Sue Monk Kidd suggests that every individual possesses an innate spark of light, described as a mysterious Inner Voice. This metaphor emphasizes the potential within each person to find their true self and purpose in life. It highlights the importance of self-discovery and listening to one’s inner thoughts and feelings as a way to uncover personal strength and resilience.

The idea of an Inner Voice invites readers to explore their unique paths and embrace their inner guidance. This notion is particularly powerful in the context of the book, where characters navigate challenges and seek freedom, underlining that listening to one’s inner light can lead to profound personal transformation and liberation.