The quote reflects on the bittersweet nature of nostalgia and memory. When we try to revisit the past, we may discover that it does not meet our current expectations or ideals, which can lead to disappointment. This moment of realization can be more painful than never being able to return to that past at all, as it disrupts the comforting and harmonious images we have held onto over time.
The sentiment expresses a universal truth about human experience. Often, our memories of the past are idealized, serving as a refuge from present dissatisfaction. However, when confronted with the reality of those memories, we may find them lacking, leading to a sense of grief or loss. This illustrates the complexities of memory and the way it shapes our present perceptions.