Rupert Hart-Davis was the quintessential man of letters, standing at the heart of twentieth-century Britain's storied literary and cultural scenes. He is, perhaps, most famous for his best-selling six volume collection of correspondence with mentor George Lyttelton, though the Hart-Davis/Lyttelton letters only scratch the surface of a truly fascinating life. From Sir Laurence Olivier and ex-wife Countess Dame Peggy Ashcroft to T. S. Eliot, Paul Robeson,...