Totemic unity as key to community in thought and action -- Myth: the emergence of diversity within unity -- The individual in the Greek polis -- The synthesis of personal uniqueness and social unity: Christian and Islamic thought -- Alienation of individuals and society: the modern challenge of unity -- Unity an social harmony: a contemporary metaphysics of freedom in a global age -- The emerging paradigm for the diversified unity of the global whole -- Epilogue: Tian Xia: All under heaven.