Warren Buffett's recent Berkshire Hathaway letter highlights his disciplined, long-term approach. Find out what we can learn from Buffett's latest insights.

Billionaire Warren Buffett is viewed as one of the world's greatest investors, so his annual letters to Berkshire Hathaway shareholders are always read closely for lessons. Buffett no longer ventures much into politics or current events in his letters,

Berkshire Hathaway shares rose to a record on Monday after the conglomerate run by Warren Buffett posted its highest-ever quarterly profit, driven by improvement in insurance operations. Julian Satterthwaite reports.