The quote reflects on the idea of lost potential and the missed opportunities for growth and self-discovery. It suggests that no one intervened or guided the individual when it could have made a difference, leading to a sense of regret. The imagery of clay represents the fragility of youth and possibility, which, once hardened, can no longer evolve into the dreams or talents it once held.
As the individual hardens into their final form, the possibility of awakening hidden talents such as those of a musician, poet, or astronomer fades away. This serves as a poignant reminder that the support and encouragement to explore one's abilities are crucial, and without them, one might end up living a life far from the one that could have been.