In Victor Hugo's "Les Misérables," the author emphasizes the profound depth of the human soul through a striking metaphor. He suggests that while the sea is vast and heavenly realms are extraordinary, the interior of a person's soul surpasses even these grand entities. This perspective highlights the complexity and significance of individual inner experiences and emotions.

The quote conveys that true beauty and enlightenment come not from the external world but from within ourselves. It invites readers to explore their own souls and recognize the immense potential and richness found in their thoughts and feelings, positioning personal introspection as an essential aspect of the human experience.