The American philosopher Robert Bruce Raup wrote a book "Complacency: The Foundation of Human Behavior" (1925) in which he claimed that the human need for complacency ("i.e. inner tranquility") was the hidden spring of human behavior. Raup made this the basis of his pedagogical theory, which he later used in his severe criticisms of the American education system of the 1930s. However, in the context of present-day society, perhaps the multidimensional leisure culture evinces in a very significant way the desire of man to return to his core state of contentment by letting go of his hectic outer activities.