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.
In the middle of the floor stood an open coffin, and within it lay the corpse of a woman still in the prime of life. The loveliest fresh roses lay upon her, leaving visible only the folded, delicate hands and the noble face, beautiful in death, with the exalted solemnity of one initiated into God's service.
By the coffin stood her husband and children, a whole flock of them, the smallest of whom was held in his father's arm. They had come to bid a last farewell, and the husband kissed her hand, that which, now like a withered leaf, had once clasped theirs with strength and love. Bitter tears of sorrow fell in heavy drops upon the floor, but not a word was spoken. Silence expressed a world of grief. And silent and sobbing, they left the room.
A lighted candle stood there, the flame struggling against the wind as it shot up its long red tongue. Strangers entered the room, closed the lid of the coffin, and hammered in the nails. The hammer strokes clanged sharply through the halls and rooms of the house, resounding in the hearts that bled there.
"Where do you take me?" inquired the Guardian Spirit. "Here could live no fairy whose pearl belong among life's best gifts."
"She dwells in this very place, now at this holy hour," said the Angel, pointing to a corner.
And there, where the mother had sat in life amid flowers and pictures, and been like the good fairy of the house, where she had affectionately greeted husband, children, and friends, and, like rays of sunshine, had spread happiness, love, and harmony, and been the very heart of everything, there now sat a strange woman clad in long, heavy robes. It was Sorrow, and she now ruled here in the mother's place. A hot tear rolled down her cheek, into her lap, where it became a pearl, sparkling with all the hues of the rainbow, and as the Angel caught it up it shone with the sevenfold luster of a star.
"The Pearl of Sorrow, the last pearl, which must never be lacking! Through it the light and splendor of all other gifts are enhanced. Behold in it a reflection of the rainbow, which unites earth with heaven itself! In the place of each or our beloved ones taken from us by death, we gain one friend more to look forward to being with in heaven. In the night we look up beyond the stars, toward the end of all things. Reflect, then, upon the Pearl of Sorrow, for within it lie the wings of Psyche, which carry us away from here."