David Marks explores a key principle of the General Theory of Behaviour, the pivotal concept of homeostasis, first described by French physiologist Claude Bernard. Bernard’s concept provides the diving board for a leap into the unknown, previously undefined sphere of homeostasis in behaviour. The General Theory of Behaviour is founded on a new construct: Psychological Homeostasis. https://us.sagepub.com/en-us/nam/a-general-theory-of-behaviour/book261220