I was 26 years old when Peter Lynch handed me this. April 28, 1983. I was the auto and retail analyst at Fidelity. Peter was in his prime, on his way to building the greatest mutual fund track record in history: 29.2% annual returns for 13 YEARS STRAIGHT, growing Magellan from $18 million to $14 billion. The Babe Ruth of investing. I'm looking at the principles he had typed up on a single sheet of paper that I've kept in my files for 42 years and I believe now is the perfect time to revisit them again. Let me walk you through a few: Rule 1B: "You need an edge to make money. Do not rely on a combination of hope and good luck." Today's retail investor has no edge. He has Reddit, Robinhood, zero-DTE options and a TikTok algorithm pushing him into whatever stock just ripped 200% the day before. That's hope and good luck wearing a fancy costume. Rule 1E: "Purchase stocks like one would purchase a business." Tesla trades at over 360 times earnings on a business deteriorating in real time, Oracle has $206 billion in liabilities against $39 billion in equity, MicroStrategy is a leveraged Bitcoin holding company priced like a software firm, and don't even get me started on SpaceX, that piece of garbage you'll be able to trade tomorrow... Nobody in their right mind would buy these as actual businesses. They buy them as stories, narratives, and lottery tickets. Peter would have called it the same way I do - these are not investments. They are speculations. GAMBLING. Rule 1G: "Study the balance sheet and cash flow statement." The hyperscalers spent over $380 billion on AI capex in 2025. Goldman says the measurable productivity payoff does not arrive until 2027 at the earliest. Oracle just reported NEGATIVE $23.7 billion in free cash flow for fiscal 2026 while borrowing at a pace that would make a leveraged buyout firm nervous. The cash flow statements are screaming but nobody is reading them. Rule 1I: "Avoid the long shot." This one cuts the deepest. The entire market has become a long shot. OpenAI is projected to post roughly $74 billion in operating losses in 2028 ALONE while priced for transformation tomorrow. Bitcoin treasury companies are multiplying off thin air. The retail investor of 2026 is making one long-shot bet after another and calling it a portfolio. Rule 3A: "When the fundamentals change, sell your mistakes." Tesla's fundamentals have changed. California registrations are down 24% year over year and inventory days went from 10 to 27. Musk himself admitted on the last earnings call that Hardware 3 cannot achieve unsupervised FSD, breaking a promise made to 4 million customers. The fundamentals have screamed change. But the stock is still at $385. The mistakes are not being sold. They are literally being doubled down on with leverage. Rule 3I: "A 30-50% profit in 12 months is great. Mediocre in three years." Today's retail crowd expects 30-50% in a WEEK. Then they wonder why they get wiped out the second the hype stops. And my favorite - Rule 3J: "Develop your own style and stick to it." That is the entire game right there. I developed mine sitting across the hall from Peter Lynch in 1983, watching him work, reading his notes, getting my own research handed back to me covered in his pencil marks. Then in 1984, my first full year managing money, I ran the #1 mutual fund in America. The Fidelity Overseas Fund was top 2 for the next six years running. I did not get there by chasing narratives. I got there by following the sheet of paper you are looking at right now. 42 years later, this single page contains more wisdom than every Fintwit thread, CNBC segment, and Wall Street price target combined. Peter retired in 1990 with the greatest mutual fund record in history. Then he sat down and wrote books explaining exactly how he did it. Only a few "investors" these days read them. And almost nobody is reading the balance sheets, the cash flow statements, or studying actual businesses today either. They are chasing AI, crypto, and whatever pumped yesterday. The wisdom on this page is timeless and it's more important than ever.