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You can catch more flies with honey than with vinegar

Cultural  

  1. You can win people to your side more easily by gentle persuasion and flattery than by hostile confrontation.

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.