Warren Buffett wasn't prepared for what the Epstein files revealed - including details about his longtime friend Bill Gates. With the Microsoft co-founder set to testify before Congress, Buffett said he has deliberately kept his distance in case he is called as a witness. "I haven't talked to him at all since the whole thing was unveiled," the billionaire investor said to CNBC about Gates. "I don't want to be in a position where I know things. At the moment, I could get called as a witness.