 This commitment to naturalism is perhaps even more on display in the Policraticus, in which John repeatedly asserts that “nature is the best guide to living” (PC: 27, 127, 201). The Policraticus follows the teaching in the Metalogicon that, while nature provides the foundation for human capabilities, they are only potentialities. “The beginning of each thing is from nature”, John observes, but people may (and should) develop their natural capacities by means of practice until they master their art, a principle that “obtains in liberal and mechanical occupations” alike (PC: 125). While nature offers a model for human conduct and association, the natural scheme for living well may only be realized with the cooperation of people who partake in it.