Adrian Kreutz

The political psychologists Hatemi, Crabtree and Smith accuse orthodox moral foundations theory of predicting what is already intrinsic to the theory, namely that moral beliefs influence political decision-making. The authors argue that, first, political psychology must start from a position which treats political and moral beliefs as equals so as to avoid self-justificatory theorising, and second, that such an analysis provides stronger evidence for political attitudes predicting moral attitudes than vice versa. I take this empirical result as a starting point to intervene in a debate in contemporary normative political theory which has, to my mind, become largely unwieldy: the political realism controversy. I advise the realists to ‘downplay’ the (thus far) inconclusive debate over realism’s metanormative standing in favour of a non-metanormative inquiry. Hatemi, Crabtree and Smith’s study makes for an excellent backdrop. It affirms the realist hypothesis that politics is in some relevant sense – a causal, psychological sense – prior to morality.

In an article published in the Journal of the American Philosophical Association, Nick Zangwill (2021) argues that “eating meat is morally good” (p. 295). It is “our duty” to eat animals, he says, “when it is part of a practice that has benefited animals” (Zangwill, 2021, p. 295). Since certain animals can be said to exist in some sense only because of meat-eating practices, and those practices benefit animals if they have good lives, argues Zangwill, that's why we owe it to the animals to eat them—it is our moral duty. I carefully dissect this crude argument into its components and debunk its conclusion.

Does political realism have anything to contribute to the debates about migration in normative political theory? Anything well-established ‘moralist’ theories do not already acknowledge, that is? Addressing Jaggar’s (_Aristotelian Soc Suppl_ Vol. XCIV, pp. 87–113, 2020) and Finlayson’s (_Aristotelian Soc Suppl_ Vol. XCIV, pp. 115–139, 2020) critical intercessions into contemporary discourse about migration I argue that a political realist approach to the theory of migration faces what I call the ‘surplus challenge’: realists supposedly have no normative surplus over (liberal) cosmopolitan and nationalist moralist approaches. This nothing-more-to-add narrative is a common argument against the possibility and integrity of political realism (as seen in, _inter alia_, Leader-Maynard and Worsnip in _Ethics_ 128(4), pp. 756–787, 2018). I show how it misconstrues the realist agenda. Finlayson, on the other hand, paints the realist intervention as primarily about paying closer attention to colonialism’s long legacy. A properly radical intrusion, however, addresses the unchecked and unwarranted, overbearing normative power of moral principles. I will conclude that for the realist, shaking up the discipline will not come as easy as pointing at some overly historicised facts. However, and despite this, the realist intervention rightly problematises contemporary philosophy of migration for its moral normativism. A radical realist approach to issues of migration, which unmasks the unjustified ‘microphysics’ political power hiding behind normative veneers, is a properly cataclysmic intrusion and the right way forward.

This thesis is the attempt to find a logical model for, and trace the history of, the catuṣkoṭi as it developed in the Indo-Tibetan milieu and spread, via China, to Japan. After an introduction to the history and key-concepts of Buddhist philosophy, I will finish the first chapter with some methodological considerations about the general viability of comparative philosophy. Chapter §2 is devoted to a logical analysis of the catuṣkoṭi. Several attempts to model this fascinating piece of Buddhist philosophy with the tools of classical logic shall be debunked. A paraconsistent alternative will be discussed but eventually dismissed. As a rejoinder, I shall propose a model for the catuṣkoṭi with the help of speech-acts. The remainder of this chapter will look at Chinese and Japanese forms of the catuṣkoṭi which I shall model in a quasi-recursive system. The third and final chapter will look at the Kyoto School's soku-hi dialectics which ties together the different threads of this essay. I will criticise an established, classical model of the soku-hi dialectics and offer an alternative with a second-order paraconsistent semantics.

The recent literature on Nāgārjuna’s catuṣkoṭi centres around Jay Garfield’s and Graham Priest’s interpretation. It is an open discussion to what extent their interpretation is an adequate model of the logic for the catuskoti, and the Mūla-madhyamaka-kārikā. Priest and Garfield try to make sense of the contradictions within the catuskoti by appeal to a series of lattices – orderings of truth-values, supposed to model the path to enlightenment. They use Anderson & Belnaps's framework of First Degree Entailment. Cotnoir has argued that the lattices of Priest and Garfield cannot ground the logic of the catuskoti. The concern is simple: on the one hand, FDE brings with it the failure of classical principles such as modus ponens. On the other hand, we frequently encounter Nāgārjuna using classical principles in other arguments in the MMK. There is a problem of validity. If FDE is Nāgārjuna’s logic of choice, he is facing what is commonly called the classical recapture problem: how to make sense of cases where classical principles like modus pones are valid? One cannot just add principles like modus pones as assumptions, because in the background paraconsistent logic this does not rule out their negations. In this essay, I shall explore and critically evaluate Cotnoir’s proposal. In detail, I shall reveal that his framework suffers collapse of the kotis. Taking Cotnoir’s concerns seriously, I shall suggest a formulation of the catuskoti in classical Boolean Algebra, extended by the notion of an external negation as an illocutionary act. I will focus on purely formal considerations, leaving doctrinal matters to the scholarly discourse – as far as this is possible.

The recent literature on Nāgārjuna’s catuṣkoṭi centres around Jay Garfield’s (2009) and Graham Priest’s (2010) interpretation. It is an open discussion to what extent their interpretation is an adequate model of the logic for the catuskoti, and the Mūla-madhyamaka-kārikā. Priest and Garfield try to make sense of the contradictions within the catuskoti by appeal to a series of lattices – orderings of truth-values, supposed to model the path to enlightenment. They use Anderson & Belnaps's (1975) framework of First Degree Entailment. Cotnoir (2015) has argued that the lattices of Priest and Garfield cannot ground the logic of the catuskoti. The concern is simple: on the one hand, FDE brings with it the failure of classical principles such as modus ponens. On the other hand, we frequently encounter Nāgārjuna using classical principles in other arguments in the MMK. There is a problem of validity. If FDE is Nāgārjuna’s logic of choice, he is facing what is commonly called the classical recapture problem: how to make sense of cases where classical principles like modus pones are valid? One cannot just add principles like modus ponens as assumptions, because in the background paraconsistent logic this does not rule out their negations. In this essay, I shall explore and critically evaluate Cotnoir’s proposal. In detail, I shall reveal that his framework suffers collapse of the kotis. Furthermore, I shall argue that the Collapse Argument has been misguided from the outset. The last chapter suggests a formulation of the catuskoti in classical Boolean Algebra, extended by the notion of an external negation as an illocutionary act. I will focus on purely formal considerations, leaving doctrinal matters to the scholarly discourse – as far as this is possible.