Ruben Noorloos

This article traces the origin of the parallelist interpretation of Spinoza. Despite some awareness that this interpretation originated in the mid-19th century, so far it has not been determined who was the first to present it. Because the interpretation arose at the same time as the psychophysical movement in empirical psychology, there have been concerns that it misdescribes Spinoza’s theoretical views and aims by confusing them with those of the psychophysicists. Here, I show that the first parallelist interpretation of Spinoza was developed independently of the psychophysical movement, by the German philosopher Friedrich Adolf Trendelenburg. Trendelenburg’s reading is quickly taken up and adapted by other authors, such as Kuno Fischer and Frederick Pollock. I consider how this reading relates to Fechner’s psychophysics, showing that he responded to Trendelenburg. Thus, the evidence suggests that the historiographical concept of parallelism developed to some extent independently from psychophysics.

This article explores the connections between David Hume's theory of prejudice, present-day theories of structural ignorance, and Hume's own racist attitudes. Charles Mills has identified certain types of ignorance, including racial ignorance, that result from social structures. Here, I argue that Hume can do something similar. Hume uses the concept of prejudice to theorize the misjudgment of someone based on their perceived membership of a certain group. Despite its seemingly individualist presentation in the Treatise, Hume's theory can, as a result of his deeply social view of the mind, be expanded to account for social-structural influences on the formation of prejudices. In fact, in several places he himself develops such structural explanations. On the resulting picture, both his racism and his theory of prejudice are seen to play important roles in his philosophy.

Spinoza’s epistemology aims at the development of ‘adequate’ and the removal of ‘confused’ ideas. His theory of confusion raises many questions, however. It has often been thought that the confusion of an idea is mind-relative, such that an idea might be confused in my mind but adequate in God’s. In this paper I argue that confusion cannot be mind-relative, because an idea’s confusion is determined by what it represents and for Spinoza, ideas are individuated by their representational content. Instead, I propose that although it is possible to consider one and the same idea both adequately and confusedly, what such acts of considering pick up on are mind-independent features of ideas.

Mind-body parallelism is the view that mind and body stand in the same “order and connection,” as Spinoza put it, or that corresponding mental and physical states have corresponding causal explanations in terms of other mental and physical states. This dissertation investigates the nature and role of mind-body parallelism, as well as other forms of parallelism, in Spinoza’s philosophy of mind. In doing so, it also considers how Spinoza’s views relate to current discussions. In present-day philosophy of mind, mind-body parallelism is almost never defended. It is seen as a historical dead-end with insurmountable problems. By contrast, I argue that parallelism powerfully responds to the post-Cartesian mind-body problem (which remains with us today) and that it points a way forward in current debates. The dissertation contains five independent chapters. After an introduction that situates parallelism in relation to both Spinoza’s time and to present discussions, Chapter 1 presents an argument for parallelism aimed at a present-day audience. Chapter 2 discusses Spinoza’s own arguments for parallelism. Both chapters help to clarify what parallelism is, in part by distinguishing between several versions of the view. Chapter 3 discusses what is often considered parallelism’s most problematic feature, its rejection of mind-body interaction. I argue that by distinguishing between the post-Cartesian context in which Spinoza wrote and present-day discussions, we can see that parallelism is compatible with mental causation. Chapters 4 and 5, finally, discuss specific ways in which parallelism is at work in Spinoza’s view of the mind. In Chapter 4, I argue that parallelism is at work in Spinoza’s interesting and distinctive positions on the nature of agency and motivation. In Chapter 5, I show the role of parallelism in his representationalist theory of consciousness. A guiding thread throughout the dissertation is that parallelism presents a distinctive and interesting way to combine realism, non-reductionism and naturalism in relation to those features of human self-understanding that seem difficult to fit into a naturalistic worldview.

A tension has been identified between the acquisition and participation metaphors for learning, and it is generally agreed that this tension has still not been adequately resolved. In this paper, we offer an alternative to the acquisition and participation metaphors for learning: the metaphor of mastering. Our claim is that the mastering metaphor, as grounded in inferentialism, allows one to treat both the acquisition and participation dimensions of learning as complementary and mutually constitutive. Inferentialism is a semantic theory which explains concept formation in terms of the inferences individuals make in the context of an intersubjective practice of acknowledging, attributing, and challenging one another's commitments. We first introduce the key concepts of inferentialism and consider the perspective on learning that inferentialism inspires. Then, we condense the lessons of the inferentialist concepts into a single mastering metaphor for learning and argue that learning consists in the process by which learners come to master concepts and practices. We conclude by discussing how the mastering metaphor could be put to work in a theoretical reconciliation of the cognitive and sociocultural dimensions of learning.