Psychopathy = lack of empathy, capacity for guilt, shame and remorse, and understanding of and respect for higher values (truth, love, beauty, justice, equality).

In psychopaths, intelligence is subsumed under primitive drives -- for sex, power, and money.

Empathy, capacity for guilt, shame and remorse, and understanding of and respect for higher values (truth, love, beauty, justice, equality) = conscience.

As Kazimierz Dabrowski, one of the world's wisest psychologists and psychiatrists (he was both) said,

'Our general inability to recognize the psychological type of psychopaths causes immense suffering, mass terror, violent oppression, genocide and the decay of civilization.'