Property, and – as philosophers might refer to it – the claim to possession and ownership of externalities, has long been a source of some disquiet. Jean Jacques Rousseau in the Second Discourse (The Discourse on Inequality) begins the second part with the dramatic opening line ‘[t]he first man who, having enclosed a piece of ground, bethought himself of saying This is mine, and found people simple enough to believe him, was the real founder of civil society.’ Plato before him and Marx later both advocated collectivisation, but Rousseau was no communist. The reality of what man had become made such reconstruction impractical. Yet the concept of property has led to inequalities that threaten capitalist society. Slavoj Zizek suggested that ‘…today’s global capitalism [may] contain antagonisms which are sufficiently strong to prevent its indefinite reproduction…’ including what he called ‘…the inappropriateness of private property…‘ especially intellectual property. Rousseau’s prescription was The Social Contract, and the abstraction of the General Will, an investiture of political legitimacy in the sovereign.