This article considers natural law perspectives on the nature of law. Natural law theories are united by what Mark Murphy calls the natural law thesis: law is necessarily a rational standard for conduct. The natural law position comes in strong and weak versions: the strong view holds that a rational defect in a norm renders it legally invalid, while the weak view holds that a rational defect in a legal norm renders it legally defective. The article explores the motivations for (...) the natural law position, before considering three lines of natural law argument found in the literature. I conclude by examining the arguments offered by John Finnis and Murphy in support of the weak natural law view. I suggest that these arguments fail to impugn the strong natural law thesis. Indeed, the functional argument outlined by Murphy provides a plausible route to a hybrid natural law view that incorporates both weak and strong claims. (shrink)

In the debate between positivism and non-positivism the argument from relativism plays a pivotal role. The argument from relativism, as put forward, for instance, by Hans Kelsen, says, first, that a necessary connection between law and morality presupposes the existence of absolute, objective, or necessary moral elements, and, second, that no such absolute, objective, or necessary moral elements exist. My reply to this is that absolute, objective, or necessary moral elements do exist, for human rights exist, and human rights exist (...) because they are justifiable. (shrink)

En el debate entre el positivismo y el no-positivismo el argumento del relativismo tiene un papel fundamental. Tal y como es presentado, por ejemplo, por Hans Kelsen, este argumento señala, en primer lugar, que una conexión necesaria entre el derecho y la moral presupone la existencia de elementos morales objetivos, absolutos y necesarios, y, en segundo lugar, que estos elementos morales objetivos, absolutos y necesarios no existen. Mi respuesta a esto es que los elementos morales absolutos, objetivos y necesarios existen, (...) porque los derechos humanos existen, y éstos existen porque son fundamentables. In the debate between positivism and non-positivism the argument from relativism plays a pivotal role. The argument from relativism, as put forward, for instance, by Hans Kelsen, says, first, that a necessary connection between law and morality presupposes the existence of absolute, objective, or necessary moral elements, and, second, that no such absolute, objective, or necessary moral elements exist. My reply to this is that absolute, objective, or necessary moral elements do exist, for human rights exist, and human rights exist because they are justifiable. (shrink)