Investment Strategy: Value investing focusing on companies with strong competitive advantages (economic moats) and competent management.

Key Principles:

• Invest in what you understand

• Buy wonderful companies at fair prices, not fair companies at wonderful prices

• Be fearful when others are greedy, and greedy when others are fearful

• Time is the friend of the wonderful business, the enemy of the poor business

Notable Quotes:

• "It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price."

• "Price is what you pay. Value is what you get."

• "The stock market is a voting machine in the short run, but a weighing machine in the long run."

Investment Strategy: Focus on transformative technologies and industries with massive potential for societal impact.

Key Principles:

• Solve the most important problems facing humanity

• Move fast and iterate quickly

• Think in terms of first principles rather than analogies

• Take calculated risks and learn from failures

Notable Quotes:

• "When something is important enough, you do it even if the odds are not in your favor."

• "I think it's very important to have a feedback loop, where you're constantly thinking about what you've done and how you could be doing it better."

• "Persistence is very important. You should not give up unless you are forced to give up."

Investment Strategy: Systematic approach using economic principles and diversification across assets and countries.

Key Principles:

• Think in probabilities, not certainties

• Embrace radical truth and radical transparency

• Understand the forces that drive economic cycles

• Create a culture of thoughtful disagreement

Notable Quotes:

• "Pain + Reflection = Progress"

• "The biggest mistake investors make is to think that what happened in the recent past will continue to happen in the future."

• "Remember that the markets can remain irrational longer than you can remain solvent."

Investment Strategy: Invest heavily in growth opportunities and be willing to sacrifice short-term profits for long-term market dominance.

Key Principles:

• Focus on long-term value creation over short-term profits

• Obsess over customers rather than competitors

• Make small decisions quickly and big decisions carefully

• Use luck to your advantage

Notable Quotes:

• "We're not Amazon.com, we're amazon.com: the '.com' is still ahead of us."

• "I very frequently get the question: "What's going to change in the next 10 years?" And that is a very interesting question; it's a very common one. I almost never get the question: "What's not going to change in the next 10 years?" And I submit to you that that second question is actually the more important of the two."

• "If you double the number of experiments you do per year, you're going to double your inventiveness."