The quote reflects a contemplation on aging and emotional growth. As people mature, they may find that their longing for those who are no longer in their lives diminishes. This could suggest that with age, individuals shift their attention to what they currently have rather than dwelling on what they have lost.
This idea implies that growing up is a process of acceptance and gratitude, encouraging a focus on present relationships and life experiences. Instead of being driven by nostalgia or absence, maturity might offer a sense of contentment with one's current situation.