The Southern Land, Known (French: Les aventures de Jacques Sadeur dans la découverte et le voyage de la terre Australe) is a book authored by Gabriel de Foigny in 1676. The story is about Jacques Sadeur, from his birth to the departures from terre Australe. In this book, Foigny utilizes Utopia to describe an egalitarian society without government and people without the need of religion.^[1]