This book is a companion to logical thought and logical thinking in China with a comparative and interdisciplinary perspective. It introduces the basic ideas and theories of Chinese thought in a comprehensive and analytical way. It covers thoughts in ancient, pre-modern and modern China from a historical point of view. It deals with topics in logical (including logico-philosophical) concepts and theories rooted in China, Indian and Western Logic transplanted to China, and the development of logical studies in contemporary China and other Chinese communities. The term “philosophy of logic” or “logico-philosophical thought” is used in this book to represent “logical thought” in a broad sense which includes thinking on logical concepts, modes of reasoning, and linguistic ideas related to logic and philosophical logic. Unique in its approach, the book uses Western logical theories and philosophy of language, Chinese philology, and history of ideas to deal with the basic ideas and major problems in logical thought and logical thinking in China. In doing so, it advances the understanding of the lost tradition in Chinese philosophical studies.
First-Order Aboutness Theory
We seem to have a good grasp of how the subject matters of truth-functional composites depends on their components: it’s simply fusion (Hawke in Australas J Philos 96:697–723, 2018, Fine in Philos Studies 177:129–171, 2020, Plebani and Spolaore in Philos Q 71:605–622, 2021, Plebani and Spolaore in Philos Stud 181:247–265, 2021, Berto in Topics of Thought, Oxford University Press, Oxford, 2022). But what relation should the subject matter of subsentential components bear to the subject matter of the sentences they feature in, and what to say about the quantified sentences of first-order predicate logic? Given how well we seem to understand sentential subject matter in the context of propositional logic, I propose a reduction of the subject matter of subsentential components and of quantified sentences to the subject matter of quantifier-free sentences. I argue that the view squares with the Fregean intuitions that gave rise to the construction of first-order logic as we know it today, motivating its adequacy as a theory of subject matter for first-order languages. I then show that this first-order aboutness theory has predictive and explanatory power, leading us to accept a modified version of Yablo’s (Aboutness, Princeton University Press, Princeton, 2014) principle of immanent closure, as well as a new conception of arbitrary objects/reference. Finally, I propose some potential developments and restrictions.
Logic and African Philosophy
“Logic and African Philosophy: Seminal Essays on African Systems of Thought” aims to put African intellectual history in perspective, with focus on the subjects of racism, logic, language, and psychology. The volume seeks to fill in the gaps left by the exclusion of African thinkers that are frequent in the curricula of African schools concerning history, sociology, philosophy, and cultural studies.
The book is divided into four parts that are preceded by an introduction to link up the essays and emphasise their sociological implications. Part one is comprised of essays that opened the controversy of whether logic can be found in traditional African cultures as well as other matters like the nature of the mind and behaviour of African peoples. The essays in part two are centred on the following question: are the laws of thought present in African languages and cultures? Part three brings together essays that sparkle the debate on whether there can be such a thing as African logic, which stems from the discussions in part two. Part four is concerned on the theme of system-building in logic; contributions are written by members of the budding African philosophy movement called the “Conversational School of Philosophy” based at the University of Calabar, and the main objective of their papers is to formulate systems of African logic.
Limiting Logical Pluralism
In this paper I argue that pluralism at the level of logical systems requires a certain monism at the meta-logical level, and so, in a sense, there cannot be pluralism all the way down. The adequate alternative logical systems bottom out in a shared basic meta-logic, and as such, logical pluralism is limited. I argue that the content of this basic meta-logic must include the analogue of logical rules Modus Ponens and Universal Instantiation. I show this through a detailed analysis of the ‘adoption problem’, which manifests something special about MP and UI. It appears that MP and UI underwrite the very nature of a logical rule of inference, due to all rules of inference being conditional and universal in their structure. As such, all logical rules presuppose MP and UI, making MP and UI self-governing, basic, unadoptable, and required in the meta-logic for the adequacy of any logical system.
Inductive Logic as Explication: The Evolution of Carnap’s Notion of Logical Probability
According to a popular interpretation, Carnap’s interpretation of probability had evolved from a logical towards a subjective conception. However Carnap himself insisted that his basic philosophical view of probability was always the same. I address this apparent clash between Carnap’s self-identification and the subsequent interpretations of his work. Following its original intentions, I reconstruct inductive logic as an explication. The emerging picture is of a versatile linguistic framework, whose main function is not the discovery of objective logical relations in the object language, but the stipulation of conceptual possibilities. Within this representation, I map out the changes that the project went through. Seen from such an explication-based perspective, inductive logic becomes quite hard to categorize using the standard labels.
Janina Hosiasson-Lindenbaum on Analogical Reasoning: New Sources
Janina Hosiasson-Lindenbaum is a known figure in philosophy of probability of the 1930s. A previously unpublished manuscript fills in the blanks in the full picture of her work on inductive reasoning by analogy, until now only accessible through a single publication. In this paper, I present Hosiasson’s work on analogical reasoning, bringing together her early publications that were never translated from Polish, and the recently discovered unpublished work. I then show how her late work relates to Rudolf Carnap’s approach to “analogy by similarity” developed in the 1960s. Hosiasson turns out to be a predecessor of the line of research that models analogical influence as inductive relevance. A translation of Hosiasson’s manuscript concludes the paper.
The Logical Development of Pretense Imagination
We propose a logic of imagination, based on simulated belief revision, that intends to uncover the logical patterns governing the development of imagination in pretense. Our system complements the currently prominent logics of imagination in that ours in particular formalises (1) the algorithm that specifies what goes on in between receiving a certain input for an imaginative episode and what is imagined in the resulting imagination, as well as (2) the goal-orientedness of imagination, by allowing the context to determine, what we call, the overall topic of the imaginative episode. To achieve this, we employ well-developed tools and techniques from dynamic epistemic logic and belief revision theory, enriched with a topicality component which has been exploited in the recent literature. As a result, our logic models a great number of cognitive theories of pretense and imagination [cf. Currie and Ravenscroft (Recreative minds, Oxford University Press, Oxford, 2002); Nichols and Stich (Mindreading: an integrated account of pretence, self-awareness, and understanding other minds, Oxford University Press, Oxford, 2003); Byrne (The rational imagination, The MIT Press, London, 2005); Williamson (The philosophy of philosophy, Blackwell Publishing, Oxford, 2007); Langland-Hassan (Philos Stud 159:155–179, 2012, in: Kind and Kung (eds) Knowledge through imaginaion, Oxford University Press, Oxford, 2016].
Logical Conventionalism and the Adoption Problem
Abstract: In this paper, I take issue with a core commitment of logical conventionalism: that we impose a logic on ourselves by adopting general linguistic conventions governing our use of logical terms, thereby determining the meanings of the logical constants and which of our inferences are valid. Drawing on Kripke’s ‘adoption problem’, I argue that general logical principles cannot be adopted, either explicitly or implicitly. I go on to argue that the meanings of our logical terms, and the validity of our inferences, cannot depend on our adoption of logico-linguistic conventions.
The Zhuangist views on emotions
In this article, I will look into the Zhuangist views on emotions. I will argue that the psychological state of the Zhuangist wise person is characterized by emotional equanimity accompanied by a general sense of calmness, ease, and joy. This psychological state is constitutive of and instrumental to leading a good life, one in which one wanders the world and explores the plurality of daos. To do so, I will first provide an overview of the scholarly debate on this issue and unveil the disconcerting disagreement that underlies it. Then, I will survey some passages in the Zhuangzi and sketch my interpretation of the Zhuangist views on emotions. Next, I will examine the theoretical foundation for this interpretation by referencing the Zhuangist pluralism and their conception of the good life. Finally, I will look into some potential objections to the Zhuangist views on emotions and attempt responses to them.
Two Levels of Emotion and Well-Being in the Zhuangzi
Emotion is an essential component of human nature, and therefore it is necessary to explore the issue of a desirable emotional state if we want to properly discuss human well-being. This article examines the issue by advocating a new understanding of the Zhuangzi’s 莊子 ideas on emotion. In terms of the Zhuangzi’s ideas on the desirable emotional state, scholars have presented various interpretations to date, even arguing that the ideas themselves are mutually contradictory or inconsistent. This article shows that the Zhuangzi’s ideas about emotions are in fact consistent by dividing emotions into two types: “conventional knowledge-dependent emotions” and “true knowledge-dependent emotions.” It then examines the characteristics of a desirable emotional state and the conditions necessary to reach it and explores the implications of the Zhuangzi’s ideas for discussions on well-being in modern times.