Cf: Honey attracts (catches, gathers) more flies than vinegar (Am.). An iron anvil should have a hammer of feathers (Am., Br.). Kindness is the noblest weapon to conquer with (Am.). A smile goes a long way (Am.). There is a great force hidden in sweet command (Br.)
Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.