Warren Buffett Quotes
Never ask a barber if you need a haircut.
Citations
Buffett, Warren. "Chairman's Letter - 1994." Berkshire Hathaway Inc., 7 Mar. 1995.
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The general principle applies to politicians consulting various experts in different ways.
This appears to be the first publication with the expression of “an axe to grind”.
Warren Edward Buffett is an American investor, business tycoon, philanthropist, and the chairman and CEO of Berkshire Hathaway. He is considered one of the most successful investors in the world and has a net worth of over US$100.6 billion as of April 2021, making him the world's seventh-wealthiest person.