Theodore Sturgeon, born Edward Hamilton Waldo (February 26, 1918 – May 8, 1985), was an American science fiction author, critic, and editor. He was a prolific and highly influential figure in the science fiction genre during the mid-20th century. Sturgeon's works were characterized by their exploration of humanity, compassion, and social issues, and he is renowned for his skill in crafting compelling characters and thought-provoking stories.