A word to the wise is sufficient
Intelligent people can take hints; they don't need to have everything explained to them at great length.
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Note
The phrase “a word to the wise” frequently accompanies a warning of some sort.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.