Abstract

Kainz’s handling of natural law thinking in ancient Greece and Rome is precise, for although he uses as his chapter heading “Concepts of Natural Law in Ancient Greece and Rome,” he is careful not to ascribe explicit natural law thinking to the Presocratics, Plato, or Aristotle, though in the case of the latter two thinkers, especially Aristotle, they were arguing for what is the essence of natural law thinking: an eternal, unchanging, absolute standard for human conduct. Kainz does use the caption, “Natural Law and Natural Justice in Aristotle”, but he qualifies it: “it is conceivable that natural human sociability itself constitutes a significant element of a latent natural law theory in Aristotle [but]... explicitly Aristotle neither enunciates nor expands on any natural law theory in the traditional sense”. This parsing is prudential since, if a thinker does not explicitly refer to a theory or position, it is not correct to say that he holds it. But when it comes to the Stoics, there is no need to temporize, as they were explicit, full-fledged natural law theorists. Kainz appropriately accords them the attention they deserve. It is remarkable to find overviews of natural law that omit the Stoics entirely. Chapters 2 and 3 reveal the bridge from natural law, as treated by Aquinas and Suarez, seen as part of divine law, to the secularization of natural law theory at the hands of Grotius and Hobbes. Although acknowledging that earlier thinkers like Robert Bellarmine and other scholastics had adverted to the possible validity of natural law without God, Kainz limns Grotius’s bold assertion of the independence of the natural law theory from any grounding in theological or religious premises as the decisive proclamation of the secularization of the natural law theory. Kainz’s discussion of Aquinas includes the very important question of whether Aquinas is “actually ‘deriving’ moral laws from natural inclinations—thus falling into the ‘naturalistic’ fallacy”? He puts that question to rest with the observation that Aquinas does not suppose that any deductions from natural law principles rely on the necessity used in theoretical reasoning but rather apply “for the most part” and thus have exceptions. Chapter 4 provides a glossary of frequently misunderstood concepts that are basic in natural law discussions, such as “nature,” “natural,” and “perversion.”