Section 1

I outline the history of natural law theory, covering Plato, Aristotle, the Stoics and Aquinas.

Section 2

I explore two alternative traditions of natural law, and explain why these constitute rivals to the Aristotelian tradition.

Section 3

I go on to elaborate a via negativa along which natural law norms can be discovered. On this basis, I unpack what I call three ''experiments in being'', each of which illustrates the cogency of this method.

Section 4

I investigate and rebut two seminal challenges to natural law methodology, namely, the fact/value distinction in metaethics and Darwinian evolutionary biology.

Section 5

I then outline and criticise the ''new'' natural law theory, which is an attempt to revise natural law thought in light of the two challenges above.

Section 6

I conclude, in Section 6, with a summary and some reflections on the prospects for natural law theory.