never ask the barber if you need a haircut
Meanings
proverb
- Do not seek advice from a biased party.
Word forms
Etymology
Attributed to Daniel S. Greenberg, who wrote “Don’t ask the barber whether you need a haircut” in the November 1972 issue of the Saturday Review, popularizing the saying. It was made more famous by Warren Buffet in his annual letter to Berkshire Hathaway shareholders.
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