The scepticism of the period from roughly 1645 to 1680 prompted philosophers’ attempts to rethink theology and moral and civil philosophy in their search for ideas concerning the common and the public good. Ralph Cudworth’s effort to overcome the challenges posed by fragmentation in religion and politics and to develop a philosophy helpful in uniting society, but not at the expense of liberty, demonstrate that Neoplatonism was an important force during that period. In a sceptical era, John Selden contributed to particularism in natural law. A discussion of Sir Robert Filmer’s life and key political ideas together with the principles of political economy he espoused follows. Given the disintegration of moral theology in that period, the commercialization of societal ties seems to have been unstoppable. Against the Macphersonian critique of possessive individualism, the chapter puts forward the opening argument that both Hobbes and Locke sought to tame the harsh society characterized by the use of credit they saw before them and that they chose to do so by means of political philosophy and natural law.