![IMAGE: Don't ask the barber whether you need a haircut. / Never ask a barber if you need a haircut. [Never ask a barber if he thinks you need a haircut.]](https://www.ok312.net/wp-content/uploads/2018/05/haircut-1007882_640.jpg)
散髪の必要性を床屋に訊くな。 - ダニエル・Ｓ・グリーンバーグ (1931 - )
/ （同上） - ウォーレン・バフェット［ウォーレン・エドワード・バフェット］ (1930 - )
/ (利害の絡む質問はするな。)
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Don't ask the barber whether you need a haircut. - Daniel S. Greenberg (1931 - )
/ Never ask a barber if you need a haircut. [Never ask a barber if he thinks you need a haircut.] - Warren Buffett [Warren Edward Buffett] (1930 - )
![IMAGE: The usefulness of (the) useless. [Everyone knows the usefulness of useful things, but no one knows the usefulness of useless things. / Everyone knows the use of the useful, but not the use of the useless.] (Even if something did not bring immediate benefit, it could still turn out to be valuable.)](https://www.ok312.net/wp-content/uploads/2026/01/place-name-sign-822236_640-100x71.jpg)
![IMAGE: Patriotism is your conviction that this country is superior to all others because you were born in it. [Patriotism: Your conviction that this country is superior to all other countries because you were born in it. / Patriotism is, fundamentally, a conviction that a particular country is the best in the world because you were born in it.]](https://www.ok312.net/wp-content/uploads/2025/10/ai-generated-9017144_640-100x67.jpg)
