Love, immortality, heart, soul
Love can release, save, redeem and free the soul – give it eternal life, immortality – e.g. the little mermaid or "Alferne paa Heden" ('the faries on the moor'), who may be given eternal life from the love of a human, or, in the case of the fairies, by "a tear of remorse or empathy from the human heart", the angel's love for Inger in "The Girl, Who Trod on the Loaf", Gerda's tears, which thaw Kay's frozen heart in "The Snow Queen" or Sorrow's tear in "The Last Pearl", the pearl that lifts the soul towards the eternal.
According to Flemming Hovmann's commentary p. 95 in vol. 7 of H.C. Andersens eventyr, Dansk Sprog- og Litteraturselskab / Borgen 1990, it is a wellknown motif in popular belief, that tears have such power.
"Why aren't there any roses here?" said Gerda. She rushed out among the flower beds, and she looked and she looked, but there wasn't a rose to be seen. Then she sat down and cried. But her hot tears fell on the very spot where a rose bush had sunk into the ground, and when her warm tears moistened the earth the bush sprang up again, as full of blossoms as when it disappeared. Gerda hugged it, and kissed the roses. She remembered her own pretty roses, and thought of little Kay.
All of a sudden, little Gerda walked up to the palace through the great gate which was a knife-edged wind. But Gerda said her evening prayer. The wind was lulled to rest, and the little girl came on into the vast, cold, empty hall. Then she saw Kay. She recognized him at once, and ran to throw her arms around him. She held him close and cried, "Kay, dearest little Kay! I've found you at last!"
But he sat still, and stiff, and cold. Gerda shed hot tears, and when they fell upon him they went straight to his heart. They melted the lump of ice and burned away the splinter of glass in it. He looked up at her, and she sang:
"Where roses bloom so sweetly in the vale,
There shall you find the Christ Child, without fail."
Kay burst into tears. He cried so freely that the little piece of glass in his eye was washed right out. "Gerda!" He knew her, and cried out in his happiness, "My sweet little Gerda, where have you been so long? And where have I been?" He looked around him and said, "How cold it is here! How enormous and empty!" He held fast to Gerda, who laughed until happy tears rolled down her cheeks. Their bliss was so heavenly that even the bits of glass danced about them and shared in their happiness. When the pieces grew tired, they dropped into a pattern which made the very word that the Snow Queen had told Kay he must find before he became his own master and received the whole world and a new pair of skates.
Gerda kissed his cheeks, and they turned pink again. She kissed his eyes, and they sparkled like hers. She kissed his hands and feet, and he became strong and well. The Snow Queen might come home now whenever she pleased, for there stood the order for Kay's release, written in letters of shining ice.