Macbeth: A Short Play

Robert Kaplan's 21st book, "The Tragic Mind," revolves around what he has learned over the years from Greek philosophers and William Shakespeare. Yale University Press says that Kaplan "employs the works of ancient Greek dramatists, Shakespeare, German philosophers, and the modern classics to explore the central subjects of international politics: order, disorder, rebellion, ambition, loyalty to family and state, violence, and the mistakes of power." Mr. Kaplan, 70, was born in New York City and graduated from the University of Connecticut. 

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