Robert Anson Heinlein (; July 7, 1907 – May 8, 1988) was an American science-fiction author, aeronautical engineer, and retired Naval officer. Often called the "dean of science fiction writers", He was among the first to emphasize scientific accuracy in his fiction, and was thus a pioneer of the subgenre of hard science fiction. His published works, both fiction and non-fiction, express admiration for competence and emphasize the value of critical thinking. His work continues to have an influence on the science-fiction genre, and on modern culture more generally.
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I am quite sure . . . I have no race prejudices, and I think I have no color prejudices, nor caste prejudices, nor creed prejudices. Indeed, I know it. I can stand any society. All I care to know is that a man is a human being — that is enough for me; he can't be any worse.