They tell us we must be prepared to contemplate, in fact to welcome, the alteration and alienation of our towns and cities. They tell us there is no such thing as our own people and our country. Indeed there is, and I say it in no mean or arrogant or exclusive spirit. What I know is that we have an identity of our own, as we have a territory of our own, and that the instinct to preserve that identity, as to defend that territory, is one of the deepest and strongest implanted in mankind. I happen also to believe that the instinct is good and that its beneficent effects are not exhausted. ... In our time that identity has been threatened more than once. In the past it was threatened by violence and aggression from without. It is now threatened from within by the foreseeable consequences of a massive but unpremeditated and fortunately, in substantial measure, reversible immigration.