" Even in laboratory animals we have found that affective goal directedness can spoil the Pavlovian experiment. When, during a bell food training session, the dog’s beloved master entered the room, the animal lost all its previous conditioning and began to bark excitedly. Here is a simple example of an age old truth: love and laughter break through all rigid conditioning. "

― Joost A.M. Meerloo , The Rape of the Mind: The Psychology of Thought Control, Menticide, and Brainwashing