The leaden heart of the happy prince and the dead bird are listed as valuable items in the story. They are valuable because both the happy prince and the swallow were generous, altruistic, and kind. The prince couldn't endure seeing his city's ugliness, sadness, and suffering, so he gave away all of his valuable stones and gold to make his people happy. Similarly, the swallow forewent his trip to Egypt to serve as the prince's messenger, delivering rare stones and gold to the poor and spreading joy. Even though the prince was blind, he loved him so much that he never abandoned him, even as the weather grew colder and colder as winter approached. He died at the feet of the monument when he could no longer stand the cold, and the statue loved him so much that its leaden heart burst in two. That is why, when God requested one of the angels to bring him the two precious things in the garden, the angel brought the leaden heart and the dead bird, and God replied that the small bird would sing forever in his garden of Paradise, and the Happy Prince would glorify God in the city of gold.