Each person, withdrawn into himself, behaves as though he is a stranger to the destiny of all the others. His children and his good friends constitute for him the whole of the human species. As for his transactions with his fellow citizens, he may mix among them, but he sees them not; he touches them, but does not feel them; he exists only in himself and for himself alone. And if on these terms there remains in mind a sense of family, there no longer remains a sense of society. - Tocqueville