This Comment reviews the theoretical underpinnings of the public trust, a doctrine originating in Roman common law and now constitutionalized by many states, and explores its contentious reception by green legal theorists. Since Professor Joseph Sax\u27s revival of the doctrine as a vehicle for environmental legal advocacy in the early 1970s, it has been haJled by many. as the most powerful tool available for protecting natural resource commons and attacked by others who argue that use of the property rights-based doctrine will reify an ownership approach to natural resources and obstruct the development of more stewardship-oriented legal theories of natural resource management. Discussion focuses on the work of Professor Sax, representing ...