These are 3 Investment Psychology principles distilled from Benjamin Graham's writing and public remarks. Use them as a decision checkpoint: translate each rule into a yes/no test, write what evidence would change your mind, and set a review date before you act. When a rule feels vague, open the full principle page and capture the driver you can verify (cash flows, leverage, incentives, competitive edge). This is educational, not investment advice—double-check primary sources and fit every rule to your time horizon, risk budget, and constraints.
"Individuals who cannot master their emotions are ill-suited to profit from the investment process. The investor's chief problem — and even his worst enemy — is likely to be himself."
Emotional control is essential for investment success.
Read Full Analysis →"You are neither right nor wrong because the crowd disagrees with you. You are right because your data and reasoning are right."
Base decisions on facts, not crowd opinion.
Read Full Analysis →"The investor's chief problem—and even his worst enemy—is likely to be himself."
Your own emotional impulses and cognitive biases are a far greater threat than any external market risk.
Read Full Analysis →Use this page as a workflow, not a collection of quotes. Pick 3–5 principles, translate each into a concrete check, and review your decisions on a fixed cadence. These are educational guardrails—always verify facts and match them to your own constraints.
Rehearse a scenario decision → ·Run a weekly toolkit → ·Browse all principles →
Graham taught at Columbia Business School for nearly three decades, where his students included Warren Buffett, who later called him the second most influential person in his life after his father. Market." Graham advocated for a disciplined, emotionally detac…
Benjamin Graham has 3 key principles on investment psychology. The most important one is "Emotions Are the Enemy" — Individuals who cannot master their emotions are ill-suited to profit from the investment process.
Benjamin Graham applies investment psychology through several key principles including "Emotions Are the Enemy" and "Think Independently". These principles guide practical investment decisions and have been tested across decades of market cycles.
Benjamin Graham's approach to investment psychology is distinguished by a focus on long-term thinking and fundamental analysis. With 3 specific principles in this area, Benjamin Graham provides a comprehensive framework that investors at any level can study and apply to improve their decision-making.
Treat each principle as a hypothesis. Write the evidence you would need, collect it from primary sources when possible (filings, letters, transcripts), and note what would invalidate the conclusion. If you can’t define inputs and triggers, you’re not applying the rule—you’re quoting it.
Pick a cadence you can sustain (weekly or monthly) and review process signals first: whether you followed your checklist, respected your boundaries, and documented assumptions. Only then look at outcomes. The goal is fewer low-quality decisions, not perfect prediction.
