The Importance of Loss in Novels

I've always been fascinated with this aspect of writing where we kind of can use our words to replace something that has been lost. That seems to be one recurring theme in Nabokas writing but also here as well if we've lost someone through a separation or through death or through just the slice of life you know people come into our lives and we kind of lose them is it at all possible to write about them by imagining their lives? I see something very similar going on here so interestingly what what they've all lost is Russia and it's not discussed at all. There are no memories memories from home there's no vision of home or of what they've left behind.