In Elizabeth Kostova's "The Swan Thieves," the author likens marriages to books, suggesting that just when you think you’ve reached the conclusion, there is always more to uncover, akin to an epilogue. This metaphor highlights the complexity and ongoing nature of relationships, as they don't end but instead continue to evolve even after significant moments have passed.

As readers, we often find ourselves reflecting on the characters' journeys long after we've finished the story. This lingering curiosity mirrors how we ponder the futures of those in our own lives, wondering how they grow or change beyond our immediate perception. The comparison emphasizes the intertwined narratives of love and life that keep us engaged and pondering even after the final page is turned.