Property rights–and nationalism

‘..That man’s territorial nature is inherent and of evolutionary origin is scarcely a new thought; it is merely an ignored one. It has been pressed aside by our political antipathies, by our sexual preoccupations, by our romantic fallacies concerning the uniqueness of man, by our contemporary dedication to the myth that man is without instinct, and a creature solely of his culture. Yet it would seem to me a thought which we may ignore no longer. As our populations expand, as a world-wide movement from countryside to city embraces all peoples, as problems of housing, of broken homes and juvenile delinquency, of mass education and delayed independence of the young rise about us in our every human midst, as David Riesman’s phrase “the lonely crowd” comes more and more aptly to describe all humankind, have we not the right to ask: Is what we are witnessing, in essence, not the first consequence of the deterritorializing of man? And if man is a territorial animal, then as we seek to repair his dignity and responsibility as a human being, should we not first search for means of restoring his dignity and responsibility as a proprietor?..’   
Robert Ardrey  “The Territorial Imperative”