Natural Law with and without God

Abstract

There is a common perception of natural law theory as characteristically (if not necessarily) theistic. This is sometimes presented as a drawback by secular critics of natural law thinking. Natural law authors themselves differ on the role of theism within their theories. Some have argued that natural law theory presupposes theism, while others have sought to give their views a secular basis. This article explores the relationship between natural law theory and theism. I begin by defining the characteristic features of the natural law outlook. I show that these core aspects of natural law thought can be rendered consistent with both theistic and non-theistic worldviews. However, these worldviews may yield different responses to some fundamental questions about natural law, such as where natural law comes from; how (and to what extent) humans can know about natural law; why humans should follow natural law; and whether natural law changes. I explore the consequences for natural law theories of theistic and non-theistic answers to these questions. I then offer some reasons for thinking that a version of theism incorporating what I term ‘qualified teleological perfectionism’ provides the most coherent foundation for the natural law outlook.