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.

Following Warren Buffett, the speaker measures investment success by tracking a company's "owner's earnings" (cash from operations minus maintenance capex), not its stock price. If operating results are growing as expected, short-term price drops become irrelevant, preventing emotional decisions and reinforcing a long-term, business-focused perspective.

Over the long run, the primary driver of a stock's market value appreciation is the growth in its underlying intrinsic value, specifically its earnings per share (EPS). This simple but profound concept grounds investing in business fundamentals, treating stocks as ownership stakes rather than speculative tickers.

Calendar year results are arbitrary and can be misleading. A more robust method is to analyze rolling returns, which evaluate performance over fixed periods (e.g., five years) from many different starting points. This method reveals a strategy's true consistency by smoothing out short-term market noise.

Inspired by Charlie Munger, this investment strategy is built on three common-sense pillars: maximizing earnings growth, maintaining valuation discipline, and focusing on downside risk. The goal is reliability and avoiding major mistakes rather than chasing spectacular, high-risk wins.

To avoid panic selling, the speaker imagines the management of his portfolio companies as close personal associates. This mental model fosters trust and patience, allowing him to hold onto strong compounders through inevitable headwinds, just as one would when backing a friend's business.

The modern market is driven by short-term incentives, with hedge funds and pod shops trading based on quarterly estimates. This creates volatility and mispricing. An investor who can withstand short-term underperformance and maintain a multi-year view can exploit these structural inefficiencies.

While many investors screen for companies with high Return on Invested Capital (ROIC), a more powerful indicator is the trajectory of ROIC. A company improving from a 4% to 8% ROIC is often a better investment than one stagnant at 12%, as there is a direct correlation between rising ROIC and stock performance.

Buy businesses at a discount to create a margin of safety, but then hold them for their growth potential. Resist the urge to sell based on price targets, as this creates a "false sense of precision" and can cause you to miss out on compounding.