Two of my favorite investors are Warren Buffet and Charlie Munger, the managers of Berkshire Hathaway:
Buffett, "The Oracle of Omaha" is the more gently one of the two, hardly speaks bad about others, preferring a metaphor instead. Munger is the one who says it as he sees it, he can be very blunt, for that I like him. These are two extremely clever, fast thinking and experienced investors with very good memories for who I have the highest regard. For a long time, their wages have been USD 100,000 per year, they hoped that would be an example for other corporations, unfortunately, it wasn't.
Faithful investors who bought BRK-A shares a long time ago will have been ample rewarded:
Yahoo longterm chart BRK-A
When Buffett bought into the company, the shares was going for around USD 20, not it is trading for USD 111,000.
But, even they can make mistakes. They didn't really see the financial crisis of 2007/8 coming, they had too many investments in financials. Also, their most likely heir to Berkshire Hathaway was David Sokol, who is involved in an ugly scandal, which has the appearance of "front running": buying privately shares of Lubrizol, and then recommending the company to Buffett with the intention of buying over the whole company.
Many books have been written about Buffett, my favorite is: "The Snowball, Warren Buffett and the business of Life" by Alice Schroeder. This book contains almost 1,000 pages and gives a very realistic picture of Buffett's live, so realistic that Buffett was not to pleased with the end result.
More interesting information in the following blog:
My favorite book about Munger is not available in bookstores, it can only be bought on the internet (there is also a version in Chinese):
The Annual year reports with wisdom from the two:
Jeff Matthews with information about the AGM of Berkshire: