"Letter from an Unknown Woman" is a short story by Stefan Zweig that explores themes of unrequited love and identity. The narrative unfolds through a letter written by a woman to a famous author, revealing her deep, lifelong affection for him. Despite their brief encounters, she has cherished her memories and experiences with him, which shape her identity. The story highlights the woman's sacrifices and the pain of loving someone who remains oblivious to her feelings. It raises questions about the nature of love, the significance of memory, and the impact of anonymity in relationships, ultimately portraying a poignant tale of longing and devotion.