 The statement of the Entitlement Theory includes reference to the principles of justice in acquisition and transfer. (For details of these principles see Nozick, pp.149–182.) The principle of justice in transfer is the least controversial and is designed to specify fair contracts while ruling out stealing, fraud, etc. The principle of justice in acquisition is more complicated and more controversial. The principle is meant to govern the gaining of exclusive property rights over the material world. For the justification of these rights, Nozick takes his inspiration from John Locke’s idea that everyone ‘owns’ themselves and, by mixing one’s labors with the world, self-ownership can generate ownership of some part of the material world. However, of Locke’s mixing metaphor, Nozick legitimately asks: ‘…why isn’t mixing what I own with what I don’t own a way of losing what I own rather than a way of gaining what I don’t? If I own a can of tomato juice and spill it in the sea so its molecules... mingle evenly throughout the sea, do I thereby come to own the sea, or have I foolishly dissipated my tomato juice?’ (Nozick 1974, p.174) Nozick concludes that what is significant about mixing our labor with the material world is that in doing so, we tend to increase the value of it, so that self-ownership can lead to ownership of the external world in such cases (Nozick 1974, pp. 149–182).