He didn’t sleep. He drank. He acted irrationally. His son-in-law and adviser Ed Cox said that Nixon was wandering the halls of the White House, “talking to pictures of former Presidents — giving speeches and talking to the pictures on the wall.” Woodward and Bernstein report that on one of his last days in the Oval Office, Nixon dropped to his knees in prayer, wailing in self-pity to Henry Kissinger: