Yield to temptation. It may not pass your way again.
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About Robert A. Heinlein
Robert A. Heinlein was a 20th-century American author and engineer. Robert Anson Heinlein was an American science fiction author, engineer, and naval officer. Sometimes 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. Read more on Wikipedia →