The author investigates the nature of right, distinguishing between strict right and equivocal rights like equity and necessity. A significant portion focuses on the concept of possession, differentiating between empirical and purely juridical possession, and applying this to the acquisition of property, both originally and through contract. Finally, the text examines the structure and function of the state, analysing the three powers (legislative, executive, and judicial), different forms of government, and the right of nations in relation to war and peace. The overarching aim is to establish a rational and a priori basis for legal principles, aiming towards a just and peaceful society.