From the EconTalk interview with Ronald Coase:
Roberts: “And how about Keynes? Did you know Keynes?”
Coase: “I can tell you– I was helping when Britain was trying to get a loan from the United States immediately after the war, and I was talking to one of Keynes’s assistants. And Keynes came in the room and walked over to us and the man I was talking to us said, ‘This is Coase, who is helping us with the statistics. I don’t think you know him.’ And Keynes said, ‘No, I don’t.’ And walked off. And that’s my life with Keynes.