From The Independent:
What was bugging Hemingway? Why all the drinking, the macho excess, the manic displays of swaggering? Why was he so drawn to war, shooting, boxing and conflict? Why did he want to kill so many creatures? Was he trying to prove something? Or blot something out of his life?
"The accumulating factors contributing to his burden of illness at the end of his life are staggering," writes Martin, listing Hemingway's bipolar mood disorder, depression, chronic alcoholism, repetitive traumatic brain injuries, the onset of psychosis. But it seems clear that the defining problem of his life was his experience of childhood. His confusion over gender, his Oedipal desire to kill his father for beating him, together led to what Martin calls "a retreat into a defensive façade of hyper-masculinity and self-sufficiency".
A superb writer none the less.