Prioritize sustainable, long-term growth and value creation over immediate, expedient gains that could damage the business's future. This philosophy guides decisions from product development to strategic planning, ensuring the company builds a lasting competitive advantage instead of chasing fleeting wins.

Unlike surgery or engineering, success in finance depends more on behavior than intelligence. A disciplined amateur who controls greed and fear can outperform a PhD from MIT who makes poor behavioral decisions. This highlights that temperament is the most critical variable for long-term financial success.

True investment prowess isn't complex strategies; it's emotional discipline. Citing Napoleon, the ability to simply do the average thing—like not panic selling—when everyone else is losing their mind is what defines top-tier performance. Behavioral fortitude during a crisis is the ultimate financial advantage.

The primary investment risk is permanent loss, not price fluctuation. Volatility becomes a tangible risk only due to external factors like an investor's psychology, career pressures, or institutional needs (e.g., daily fund withdrawals, university budget draws).

Nietzsche's thought experiment of eternally reliving one's life forces moral clarity, mirroring Warren Buffett's "inner scorecard." Both concepts champion making decisions based on internal principles and integrity, rather than external validation, social pressure, or legality.

Investment philosophy often aligns with psychological disposition. Growth investing demands an optimistic view of the future, betting on innovation and expansion. In contrast, value investing is inherently more pessimistic, focusing on buying assets below their current worth with the hope of mean reversion.

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.

The primary driver of market fluctuations is the dramatic shift in attitudes toward risk. In good times, investors become risk-tolerant and chase gains ('Risk is my friend'). In bad times, risk aversion dominates ('Get me out at any price'). This emotional pendulum causes security prices to fluctuate far more than their underlying intrinsic values.

The common bias of loss aversion doesn't affect investors who have done exhaustive upfront work. Their conviction is based on a clear understanding of an asset's intrinsic value, allowing them to view price drops as opportunities rather than signals of a flawed decision.