Robert A. Heinlein about waste (“Time Enough for Love”, 1973) - Never attempt to teach a pig to sing; it wastes your time and annoys the pig.
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“ Never attempt to teach a pig to sing; it wastes your time and annoys the pig. ”
 Robert A. Heinlein, Time Enough for Love (1973). copy citation

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1973
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Robert A. Heinlein about waste (“Time Enough for Love”, 1973) - Never attempt to teach a pig to sing; it wastes your time and annoys the pig.
Robert A. Heinlein about waste (“Time Enough for Love”, 1973) - Never attempt to teach a pig to sing; it wastes your time and annoys the pig.