Online research in philosophy

In this paper the thesis is argued that there is no need for a special legal logic to deal with the defeasibility of legal arguments. An important argument for this thesis is that legal judgements ask for a complete justification and that such a complete justification requires a deductively valid argument.

This paper offers a diachronic reconstruction of MacCormick's theory of law and legal argumentation: In particular, two related points will be highlighted in which the difference between the perspective upheld in Legal Reasoning and Legal Theory and the later writings is particularly marked. The first point concerns MacCormick's gradual break with legal positivism, and more specifically the thesis that the implicit pretension to justice of law proves legal positivism false in all its different versions. The second point concerns MacCormick's acceptance of the one-right-answer thesis and the consequent thinning of the differences between MacCormick's theory of legal reasoning and that of Ronald Dworkin and of Robert Alexy. The intent, however, is not only to describe this change in MacCormick's thought, but also to attempt a defence of the original view that we find in Legal Reasoning and Legal Theory.

Legitimate authority -- The claims of law -- Legal positivism and the sources of law -- Legal reasons, sources, and gaps -- The identity of legal systems -- The institutional nature of law -- Kelsen's theory of the basic norm -- Legal validity -- The functions of law -- Law and value in adjudication -- The rule of law and its virtue -- The obligation to obey the law -- Respect for law -- A right to dissent? : civil disobedience -- A right to dissent? : conscientious objection --The purity of the pure theory -- The argument from justice, or how not to reply to legal positivism.

The aim of the paper is that of discussing some recent antipositivist theses, with specific reference to the arguments that focus on the alleged incapability of legal positivism to understand and explain the complex normative structure of constitutional states. One of the central tenets of legal positivism (in its guise of ``methodological'' or ``conceptual'' positivism) is the theory of the separation between law and morality. On the assumption that in contemporary legal systems, constitutional law represents a point of intersection between law and basic moral values, antipositivists contrast legal positivism with two main arguments. First, on a more general level, the positivist theory of the separation between law and morality is questioned; then, and consequently, the ``neutrality thesis'' in the juristic study of law is rejected. The author discusses both these antipositivist arguments, and offers a brief defence of methodological positivism.

Commercial lawyers working across borders know that globalization has changed commercial law. To think of commercial law as only the law of states is to have an inadequate understanding of the norms governing commercial transactions. Some have argued for a transnational conception of commercial law, but their grounds of justification have been unpersuasive, often grounded on claims about the common content among national legal systems. Legal positivism is a rich literature on the concept of a legal system and the validity conditions for rules in legal systems, but it has not been used to understand legal order outside or beyond the state. This article aims to use legal positivism to conceptualize a transnational commercial law order. Prevailing positivist accounts at least implicitly condition legal order on state sovereignty. The article offers a cosmopolitan conception of legal positivism, in which the state is no longer an enabling condition for law. The cosmopolitan conception provides the means by which to adequately describe a transnational commercial law order. There are limits to the conceptual analysis this article provides, one of which is that it does not purport to evaluate the justice or morality of transnational legal order. But the cosmopolitan conception of legal positivism elucidated in this article stands on its own as a way of understanding a number of transnational legal orders other than commercial law. The attractiveness of the account is that it describes law as a human social practice even when it is not solely the product of the state, so that we do not have to rely on natural law theories to understand legal rules that states do not maintain.

The aim of this collection of essays on legal positivism is to complete the already easily available English material on this subject. This is not a collection of writings by legal positivists, but about legal positivism.

Of all the concepts in use in the legal discourse, "legal positivism" is certainly one of the most polysemous. This is why one currently runs the risk of being misunderstood when making use of it. In particular, there is a sharp distinction between how legal theorists use the concept and how it is most often used by other legal scholars and legal practicioners. This paper attempts to succinctly present a typology of the different uses of the concept in order to facilitate more fruitful discussions. We have classified the different uses of the concept in three broad categories: (1) legal positivism as a methodological approach to the study of law; (2) legal positivism as a theory of law; and (3) legal positivism as an ideology. Each category is further subdivided so as to highlight different currents in the use of the concept within each category.

In this paper, I present a new argument against inclusive legal positivism. As I show, any theory which permits morality to be a condition on legality cannot account for a core feature of legal activity, namely, that it is an activity of social planning. If the aim of a legal institution is to guide the conduct of the community through plans, it would be self-defeating if the existence of these plans could only be determined through deliberation on the merits. I also argue that, insofar as inclusive legal positivism was developed as a response to Ronald Dworkin's critique of H. L. A. Hart's theory of law, it was founded on a mistake. For once we appreciate the role that planning plays in legal regulation, we will see that Dworkin's objection is based on a flawed conception of legal obligations and rights and hence does not present an objection that inclusive legal positivists were required to answer.

In this paper I put forward some arguments in defence of inclusive legal positivism . The general thesis that I defend is that inclusive positivism represents a more fruitful and interesting research program than that proposed by exclusive positivism . I introduce two arguments connected with legal interpretation in favour of my thesis. However, my opinion is that inclusive positivism does not sufficiently succeed in estranging itself from the more traditional legal positivist conceptions. This is the case, for instance, with regard to the value-freedom principle, which is commonly accepted by inclusive positivist scholars. In contrast with this approach, I try to show, in the concluding section, how a constructivistic version of inclusive positivism could legitimately acknowledge the presence of value-judgments in the cognitive activities of jurists and legal theorists.

Abstract. The central argument of this article turns on the dual-nature thesis. This thesis sets out the claim that law necessarily comprises both a real or factual dimension and an ideal or critical dimension. The dual-nature thesis is incompatible with both exclusive legal positivism and inclusive legal positivism. It is also incompatible with variants of non-positivism according to which legal validity is lost in all cases of moral defect or demerit (exclusive legal non-positivism) or, alternatively, is affected in no way at all by moral defects or demerits (super-inclusive legal non-positivism). The dual nature of law is expressed, on the one hand, by the Radbruch formula, which says that extreme injustice is not law, and, on the other, by the correctness argument, which says that law's claim to correctness necessarily includes a claim to moral correctness. Thus, what the law is depends not only on social facts, but also on what the law ought to be.