In Victor Hugo's "Les Miserables," the importance of intellectual and moral development is emphasized as crucial alongside physical well-being. Hugo argues that gaining knowledge and engaging in thoughtful reflection are essential to personal growth. Just as food sustains the body, truth and understanding nurture the mind and soul.

Hugo suggests that neglecting education and wisdom leads to a diminished existence. Without the nourishment of knowledge, a person's growth is stunted, much like a body deprived of food. His message highlights the interconnectedness of moral, intellectual, and material progress in achieving a fulfilled and meaningful life.