A non-tragic “hero of ancient Greece” 　　April 21, 1946, Easter. John Maynard Keynes, a 62-year-old economics guru, died of a heart attack at Tilton Farmhouse on the southwest coast of England this morning. From 1943 to 1944 he was worn out and debilitated by the Bretton Woods negotiations. Returning from Washington, his health continued to deteriorate. The day before his death, Cairns went to the seaside by car with his wife and mother. On the way back, he felt in good health and decided to go for a walk with Lydia. He described to her a book of poetry he had just bought, and concluded, “All this has but one…