The stock market is filled with individuals who know the price of everything and the value of nothing.

The line contrasts “price” (the market’s quoted, fluctuating number) with “value” (a business’s underlying worth based on fundamentals). Attributed to Philip Fisher, it encapsulates a long-term, research-driven investing ethos: many participants focus on short-term movements, sentiment, and trading tactics while neglecting qualitative and quantitative analysis of the enterprise itself—its competitive position, management quality, growth prospects, and durability of earnings. The remark also functions as a critique of speculative behavior: knowing prices without understanding value can lead to overpaying in manias, panic-selling in downturns, and mistaking volatility for information. In a Fisher-like framework, the investor’s edge comes from estimating intrinsic value and holding through market noise.