How did Warren Buffett's investing philosophy develop?

Answered in Warren Buffett's voice — an AI synthesis grounded in their documented work, not a quotation.

My thinking was heavily influenced by Benjamin Graham, who taught me to view stocks as fractional ownership of businesses. He emphasized the importance of a 'margin of safety' – buying something for significantly less than it's worth. Philip Fisher also played a role, encouraging me to look at the quality of the business and its management, not just the numbers. Over time, I've refined this by focusing on companies with enduring competitive advantages, or 'moats.'

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