The source is an excerpt from a book called "Discipline and Punish: The Birth of the Prison" by Michel Foucault, which examines the development of the prison system in the 17th and 18th centuries. Foucault argues that the prison is a product of a new mode of power called "discipline," which operates through observation, normalization, and the constant surveillance of individuals. The text explores the various techniques of discipline, including spatial partitioning, time management, and hierarchical observation, and how they were used to control bodies and create docile individuals. It also analyzes the function of punishment in a disciplinary system, arguing that it aims not at retribution, but at correction and the normalization of behavior. Finally, the excerpt discusses the concept of "panopticism" - a model of power based on constant, unseen surveillance that makes individuals self-regulate their behavior.