This giant of modern psychology wrote that The Gestalt Approach was "an exploration of a somewhat new approach to the entire subject of human behavior -- both in its actuality and its potentiality." Eyewitness contains film transcripts that Perls believed had significant teaching value.This giant of modern psychology wrote that The Gestalt Approach was "an exploration of a somewhat new approach to the entire subject of human behavior -- both in its actuality and its potentiality." Eyewitness contains film transcripts that Perls believed had significant teaching value.