Yiftach J. H. Fehige

The ontological argument is one of the most intriguing lines of reasoning in Western thought. Leaving behind debates over the proper relation between science and religion, it makes a simple move from conceptual analysis to existence in order to prove the existence of god. The ontological argument will be reviewed against the background of the contemporary debate on thought experiments. Assuming that the ontological argument fails as a philosophical proof, I will argue that its move from concept to existence might best be understood as a thought experiment of revealed theology (a theology based on revelation – unlike philosophical theology/natural theology). Viewed from this perspective it makes sense that Anselm of Canterbury offered his versions of the ontological argument in the form of a prayer, which, presupposing the existence of god, seems to run counter to a proof of god's existence.

Abstract Thought experimentation is part of accepted scientific practice, and this makes it surprising that philosophers of science did not seriously engage with it for a very long time. The situation changed in the 1990s, resulting in a highly intriguing debate over thought experiments. Initially, the discussion focused mostly on thought experiments in physics, philosophy, and mathematics. Other disciplines have since become the subject of interest. Yet, nothing substantial has been said about the role of thought experiments in nonphilosophical theology. This paper discusses the role of thought experiments in Christian theology in comparison to their role in quantum physics, as mentioned by John Polkinghorne in Quantum Physics and Theology. We first look briefly at the history of the inquiry into thought experiments and then at Polkinghorne's remarks about the role of thought experimentation in quantum physics and Christian eschatology. To determine the actual importance of thought experiments in Christian theology a number of new examples are introduced in a third step. In the light of these examples, in a fourth step, we address the question of what it is that explains the cognitive efficacy of thought experiments in quantum physics and Christian theology

Marco Buzzoni has presented a Kantian account of thought experiments in science as a serious rival to the current empiricist and Platonic accounts. This paper takes the first steps of a comprehensive assessment of this account in order to further the more general discussion of the feasibility of a Kantian theory of scientific thought experiments. Such a discussion is overdue. To this effect the broader question is addressed as to what motivates a Kantian approach. Buzzoni's account and the assessment developed in this paper are warranted by the fact that the history of philosophical inquiry into thought experiments is deeply interwoven with Kant's philosophy. This history will be depicted here for the first time in more comprehensive terms to contextualize Buzzoni's account in historical and systematic perspective.

In this paper I raise awareness of a crucial blind spot in scholarship on the Christian-Jewish dialogue. The main argument of the paper is that a closer examination of the dialogue form is necessary in order to assess the tenability of Christian-Jewish dialogue. Despite the widespread talk and intensive scholarship about the Jewish-Christian dialogue two things remain unclear: what concept of dialogue is presupposed; what makes the dialogue form appropriate for the Christian-Jewish encounter. This paper discusses the possibility that the use of the dialogue form is a means of theological imperialism. I both rule out this possibility and propose an argument to justify the tenability of Jewish-Christian dialogue that I defend against objections which follow from Richard Swinburne’s Christian philosophy of revelation

Building on a previously published contextualization of Marco Buzzoni’s Neo- Kantian account of scientific thought-experiments, this paper examines the explanatory power of this account. It is argued that Buzzoni’s account suffers from a number of shortcomings. Einstein’s clock-in-the-box thought experiment facilitates the demonstration of these deficits. In the light of both the identified inadequacies of Buzzoni’s account and the long-standing history of Kantian approaches to thought experiments, this paper finally sketches an alternative Neo-Kantian account. This alternative utilizes Michael Friedman’s reading of Kant’s a priori within a Kuhnian account of thought experiments along the lines of conceptual constructivism as anticipated by Georg Lichtenberg and further developed recently by Tamar Gendler.

Transsexuality has been subject to careful reflections in many disciplines outside philosophy. I first contextualize my philosophical approach by relating to the existing scholarship on transsexuality. Focusing on matters of sexual identity, I then propose a characterization of what might be considered the philosophical dimension of transsexual identity. Paying particular attention to the propositional consciousness of transsexuals, I develop the main thesis that transsexuality helps philosophers of sex to forcefully establish the contingency of sexual identity in terms of the underlying biology of the sexed human body. I eventually argue that sexual identity is a cluster concept, which is constituted by sex, gender, sexual practice and desire. In this sense the following argument against “foundationalism” in philosophy of sex emerges: none of the four aspects of sexual identity can function as basic, prior to any normative commitments regarding the nature of human sexuality.

Furthering the dialogue with J. Wentzel van Huyssteen over his way of reconciling Christianity and science while reflecting on human uniqueness, I offer a philosophical analysis of the phenomenon of transsexuality. The focus of my analysis is the implications of transsexuality for the metaphysics of reductive naturalism. Envisioning a pluralistic ontology of the sexed human body, I propose to account for human sexuality within the general framework of normative pragmatism. The context of my reflections is a theology of sexual diversity, which I believe van Huyssteen has good reasons to endorse.

Thought experiments are employed for a number of reasons and in many different disciplines. This paper explores the work of Novalis in relation to the method of thought experiments in theology, with a special focus on the encounter between Christianity and the science of his day. In a first step I revisit the ongoing philosophical discussion on thought experiments in order to highlight the lack of interest in the literary features of thought experiments. Step two is dedicated to a discussion of the work of Novalis as far as his metaphysics of phantasy and imagination is concerned as it plays out in his romantic poetry. Building on the results of this discussion, in a third step I discuss the relationship (a) between thought experiments in theology and other disciplines, (b) between current discussions of thought experiments and previous periods of philosophical investigation into the ‘laboratory of the mind’, (c) between Christianity and science, and (d) between literary fiction and cognition.