The short answer is that Warren Buffett combined quantitative aspects of investing (ie., Ben Graham) with qualitative aspects of investing (ie., Philip Fisher).

The short answer is that Warren Buffett combined quantitative aspects of investing (ie., Ben Graham) with qualitative aspects of investing (ie., Philip Fisher). To get a better idea of these two approaches: Read Ben Graham's book: http://www.amazon.com/Intelligent-Investor-Definitive-Investing-Practical/dp/0060555661 http://www.amazon.com/Intelligent-Investor-Definitive-Invest... and Read Philip Fisher's book: http://www.amazon.com/Common-Stocks-Uncommon-Profits-Writings/dp/0471445509 http://www.amazon.com/Common-Stocks-Uncommon-Profits-Writing... Both are good reads.