Manuel Velasquez, Claire Andre, Thomas Shanks, S.J., and Michael J. Meyer "The common good is a notion that originated over two thousand years ago in the writings of Plato, Aristotle, and Cicero. More recently, the ethicist John Rawls defined the common good as "certain general conditions that are...equally to everyone's advantage". The Catholic religious tradition, which has a long history of struggling to define and promote the common good, defines it as "the sum of those conditions of social life which allow social groups and their individual members relatively thorough and ready access to their own fulfillment." The common good, then, consists primarily of having the social systems, institutions, and environments on which we all depend work in a manner that benefits all people. Examples of particular common goods or parts of the common good include an accessible and affordable public health care system, an effective system of public safety and security, peace among the nations of the world, a just legal and political system, an unpolluted natural environment, and a flourishing economic system. Because such systems, institutions, and environments have such a powerful impact on the well-being of members of a society, it is no surprise that virtually every social problem in one way or another is linked to how well these systems and institutions are functioning."