LAURENT GUYENOT—The most characteristic trait of the psychopath is a complete absence of empathy and, as a result, of moral inhibition in harming others, combined with a thirst for power. Psychopathy also shares some traits with narcissism: psychopaths have a grand vision of their own importance. In their minds, everything is owed to them because they are exceptional. They are never wrong, and failures are always the fault of others.
Truth is of no value to the psychopath; truth is whatever is convenient for him at any given moment. He is a pathological liar, but he is hardly aware of it. Lying is so natural to him that the question of his “sincerity” is almost irrelevant: the psychopath beats the lie detector.