Sokol, who used to run BerkshiresubsidiariesMidAmericanandNetJets, waswidelyseen asBuffett's heir apparent, an image Buffett biographerssaythe "OracleofOmaha" cultivated.
For seven years Warren Buffett, the so-called Oracle of Omaha, ranked just behind his good friend and bridge partner Bill Gates as the world's second-richest man.