The introduction explains the complexities involved in the definition and history of camping, and the ways its recreational, political, and functional versions have intertwined and coevolved. It relates camping to the concept of the social contract that anchored the founding era of the United States, particularly as an agrarian ideal promoted by Thomas Jefferson. Moreover, it introduces the term “public nature”—both outdoor spaces and ideas about those spaces as settings where people work out relationships to nature, nation, and each other—as a useful way to approach the key questions of the book: What does it mean to camp, and why does it matter? The introduction offers a brief overview of the social contract and its relationship to public nature through the early twentieth centuries, touching on John Locke’s philosophy, back-to-the-land movements, the growth of urban industrial systems, consumer culture, and preservation movements.