The twin notions of exclusion and possession dominate our cultural and legal conceptions of property. This Article uses the lens of hedonics-the emergent science of happiness-to make a case for the less appreciated notions of inclusion and dispossession. Evidence from this new field shows that owners maximize their welfare, not when they amass land and chattels and keep others away from them, but when they pursue the polar-opposite strategies of inclusion and dispossession, such as sharing their property, donating it to charity, or giving it away. This Article begins its defense of inclusion and dispossession by providing background about the idea of happiness and law, an increasingly important conceptual framework for welfarist analysis of...