“The person must give himself an external sphere of freedom in order to have being as Idea.”
This is what Hegel says in his Elements of the Philosophy of Right (translated by H.B.Nisbet, here is another version). Person refers to an abstract subject that has already become a self-conscious will that has being in and for itself. The external sphere refers to the existence (Dasein) out there that he is to possess, recognize as his own. Freedom is this force of the will, just like gravity is the force of a mass. And idea refers to that freedom realized, by the will now possessing its existence (Dasein), which of course becomes its “private property”.