Holmes was charming and gracious, but something about him made Belknap uneasy. He could not have defined it. Indeed, for the next several decades alienists and their successors would find themselves hard-pressed to describe with any precision what it was about men like Holmes that could cause them to seem warm and ingratiating but also telegraph the vague sense that some important element of humanness was missing. At first alienists described this condition as "moral insanity" and those who exhibited the disorder as "moral imbeciles." They later adopted the term "psychopath," used in the lay press as early as 1885 in William Stead's Pall Mall Gazette, which described it as a "new malady" and stated, "Beside his own person and his own interests, nothing is sacred to the psychopath." Half a century later, in his path-breaking book The Mask of Sanity, Dr. Hervey Cleckley described the prototypical psychopath as "a subtly constructed reflex machine which can mimic the human personality perfectly. … So perfect is his reproduction of a whole and normal man that no one who examines him in a clinical setting can point out in scientific or objective terms why, or how, he is not real.
( Erik Larson )
[ The Devil in the White City: ]
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