Williams’ commitment to his emotionally distraught character trying to comfort his sons struck Simon. In Dave Itzkoff’s biography of the star, “Robin,” Simon said, “The crazed, manic stand-up routines, the machine-gun witticisms, and impersonations — all of it was on hold as he tried to live in the shattered soul of a husband and father who had just lost his wife to sudden, implacable violence.”