The lectures that were the basis for Man and the State were delivered at the University of Chicago at a time when Maritain was still in the first enthusiasm of his participation in the 1948 Universal Declaration of Human Rights. He devotes particular attention to the concept of rights, since, historically, rights theories were fashioned to supplant the natural law theory to which Maritain as a Thomist gives his allegiance. Maritain provides an ingenious and profound theory as to how natural law and natural rights can be complementary. For this reason alone it remains a fundamental contribution to political philosophy, but it is filled with other gems as well. Was Maritain too optimistic in his appraisal of modernity? Or have we unjustly lost the optimism that was his? Man and the State is an invitation to rethink the way we pose the basic questions of political philosophy.