The quote reflects the perspective that true luck is rare, and most people experience daily sadness and challenges. The idea suggests that even those deemed 'lucky' encounter their share of grief, with only a few days filled with pure joy. This emphasizes the transient nature of happiness and the struggles that are a part of everyday life.
In contrast, the majority of individuals endure a constant sense of despair, likened to a never-ending night. Hugo portrays a stark reality where joy is fleeting, suggesting that the concept of being a 'lucky man' may be an illusion amidst the inevitable sorrows of existence.