A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.
Robert Anson Heinlein (July 7, 1907 – May 8, 1988) was an American science-fiction writer. Often called the "dean of science fiction writers", his controversial works continue to have an influential effect on the genre, and on modern culture more generally.
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