Why does the Chrysalids begin and end with the city in David's dream?

Answer 1

Probably to bring the story full circle... to show you that they are going to a place where they are meant to be rather than out of the frying pan and into the fire where they will be exploited and used.

Answer 2

The book "The Chrysalids" by John Wyndham begins and ends with the city in David's dream to symbolize his desire for a better society where people aren't persecuted for being different. The dream serves as a recurring motif throughout the story, reflecting David's longing for a world where individuals can coexist peacefully despite their differences. Additionally, the dream embodies David's hope for a future where society can evolve beyond its current state of intolerance and fear.