Contrary to popular belief, earnings growth has a very low correlation with decadal stock returns. The primary driver is the change in the valuation multiple (e.g., P/E ratio expansion or contraction). The correlation between 10-year real returns and 10-year valuation changes is a staggering 0.9, while it is tiny for earnings growth.

Counter to conventional value investing wisdom, a low Price-to-Earnings (P/E) ratio is often a "value trap" that exists for a valid, negative reason. A high P/E, conversely, is a more reliable indicator that a stock may be overvalued and worth selling. This suggests avoiding cheap stocks is more important than simply finding them.

Graham adopted philosopher Baruch Spinoza's idea of viewing things "in the aspect of eternity" to teach investors to focus on long-term intrinsic value rather than getting caught up in the market's daily emotional swings, promoting a disciplined, long-term perspective.

Intrinsic value shouldn't be confused with a 12-month price target. It is a calculation of a company's long-term worth, akin to a private market or takeover value. This stable anchor allows investors to assess the "margin of safety" at any given market price and ignore daily noise, rather than chasing a specific trading level.

Dividends do not inherently increase an investor's capital, as a dividend payment reduces the stock's price by the same amount. Total shareholder return is only achieved if the dividend is fully reinvested without taxes or fees; otherwise, only price appreciation grows the initial investment.

Michael Mauboussin argues the market is inherently long-term oriented. For major Dow Jones stocks, nearly 90% of their equity value is derived from expected cash flows beyond the next five years, debunking the common narrative of market short-sightedness and a focus on quarterly results.

Anchoring valuation on a company's typical price-to-sales ratio helps identify buying opportunities when margins are temporarily depressed. This avoids the pitfalls of methods like the Magic Formula, which can mistakenly favor companies at their cyclical earnings peaks, leading to underperformance.

Financial models struggle to project sustained high growth rates (>30% YoY). Analysts naturally revert to the mean, causing them to undervalue companies that defy this and maintain high growth for years, creating an opportunity for investors who spot this persistence.

Investors instinctively value the distant future cash flows of elite compounding businesses higher than traditional financial models suggest. This phenomenon, known as hyperbolic discounting, helps explain why these companies consistently command premium multiples, as the market behaves more aligned with this model than standard exponential discounting.