The Warren Buffett Way, Second Edition

[This] book talks about investment techniques, it is fundamentally about investment principles. And principles do not change ... All along the way, Warren Buffett's investment approach never changed. He has continued to follow the same principle s outlined in this book: think of buying stocks a buying fractional interests in whole business; construct a focused low-turnover portfolio; invest in only what you can understand and analyze; demand a margin of safety between the purchase price and the company's long-term value.-Foreword to the 2nd ed.