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In page Robert A. Heinlein:

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He spent his childhood in Kansas City, Missouri.[2] The outlook and values of this time and place (in his own words, "The Bible Belt") had an influence on his fiction, especially in his later works, as he drew heavily upon his childhood in establishing the setting and cultural atmosphere in works like Time Enough for Love and To Sail Beyond the Sunset.[citation needed] The 1910 appearance of Halley's Comet inspired the young child's life-long interest in astronomy.[3]