FBI profiler Robert K. Ressler (off-screen): “So really, you’re a psychologist in your own right, from the standpoint of how to size up people, hum, how they’ll respond to you.”
Ed Kemper: “How about sociologist, in that very lay level. Psychiatrist is looking for pathology. I was looking for ways to influence people.”
FBI profiler Robert K. Ressler (off-screen): “Yeah, OK.”
Excerpt from a 1989 interview for the FBI.