" Buzhardt was not sure, but he would check. He discerned that the President was extremely concerned about the gap, but there was something evasive in Nixon’s approach, something disturbing about his reaction. To Buzhardt, he seemed to be suggesting alternative explanations for the lawyer’s benefit, speculating on various excuses as if to say, “Well, couldn’t we go with one of those versions?” Buzhardt prided himself on being able to tell when the President was lying. Usually it wasn’t difficult. Nixon was perhaps the most transparent liar he had ever met. Almost invariably when the President lied, he would repeat himself, sometimes as often as three times—as if he were trying to convince himself. But this time Buzhardt couldn’t tell. One moment he thought Nixon was responsible, at another he suspected Woods. Maybe both of them had done it. One thing seemed fairly certain: it was no accident. "

― Bob Woodward , The Final Days