Victor Hugo emphasizes the unique role of a mother in shaping the moral and emotional development of a young girl. He suggests that no institution or group, such as nuns or religious figures, can replicate the profound influence a mother has on her child's soul. This underscores the idea that maternal care and love are irreplaceable forces in a child's upbringing.

The quote reflects the deep connection between a mother and her daughter, highlighting the essential qualities of guidance, nurture, and emotional support that only a parent can provide. Hugo's perspective elevates the significance of motherhood, portraying it as a fundamental aspect of a young girl's formation and moral compass.