Warren Buffett, chairman and CEO of Berkshire Hathaway (BRK.B) (BRK.A), is renowned for the clarity and rigor of his investment philosophy. In his 1981 shareholder letter, Buffett articulated a guiding principle that has shaped Berkshire’s approach for decades: “If something’s not worth doing at all, it’s not worth doing well.” This statement, though succinct, reflects a deep conviction about the importance of focus and substance in business and investing.
Buffett’s perspective emerged during a period marked by economic volatility, high inflation, and shifting business norms. Against this backdrop, he outlined Berkshire Hathaway’s comfort with both full ownership of businesses and significant holdings in marketable securities, provided the opportunities were substantial and strategically sound. The company’s insurance and trading stamp operations, for example, required sizable investments in liquid securities, but Buffett was clear that every allocation of capital needed to meet a high bar for long-term value.
