Great article with a number of well-known references to biographies of Feynman. For those interested in Dirac, some excellent biographies have emerged over the years including: "The Strangest Man: The Hidden Life of Paul Dirac, Mystic of the Atom" and "Dirac: A Scientific Biography ". [0][1].
one anecdote about Dirac. Dirac and Heisenberg discussed about religion. They involved Pauli in the discussion and Pauli summed up Dirac's point of view: "“Es gibt keinen Gott und Dirac ist sein Prophet. (There is no God and Dirac is his Prophet.)"
[0] https://www.amazon.com/gp/product/B002LDM8QS/ref=dbs_a_def_r...
[1] https://www.amazon.com/Dirac-Scientific-Biography-Helge-Krag...