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Samuel R. Delany is an American science fiction and fantasy writer, literary critic, and professor. He is best known for his Nebula Award-winning novel "Dhalgren" (1975) and his Hugo Award-winning novel "Stars in My Pocket Like Grains of Sand" (1969). Delany's work is often characterized by its experimental style, its exploration of themes of race, gender, and sexuality, and its use of non-linear narratives.