The average intelligence of the psychopath, especially if measured via commonly used tests, is somewhat lower than that of normal people, albeit similarly variegated. Despite the wide variety of intelligence and interests, this group does not contain examples of the highest intelligence, nor do we find technical or craftsmanship talents among them. The most gifted members of this kind may thus achieve accomplishments in those sciences which do not require a correct humanistic world view or practical skills. [...]

In spite of their deficiencies in normal psychological and moral knowledge, they develop and then have at their disposal a knowledge of their own, something lacked by people with a natural world view. They learn to recognize each other in a crowd as early as childhood, and they develop an awareness of the existence of other individuals similar to them. They also become conscious of being different from the world of those other people surrounding them. They view us from a certain distance, like a para-specific variety. Natural human reactions - which often fail to elicit interest to normal people because they are considered self-evident - strike the psychopath as strange
and, interesting, and even comical. They therefore observe us, deriving conclusions, forming their different world of concepts. They become experts in our weaknesses and sometimes effect heartless experiments. The suffering and injustice they cause inspire no guilt within them, since such reactions from others are simply a result of their being different and apply only to "those other" people they perceive to be not quite conspecific. Neither a normal person nor our natural world view can fully conceive nor properly evaluate the existence of this world of different concepts.