On Frege Puzzles

Why Propositions Are Not the Objects of Our Mental Attitudes

Stefan Rinner (University of Duisburg-Essen, Germany)

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English

Routledge
30 July 2025

Philosophy of language; Philosophy; Philosophy: logic; Philosophy of mind; History of ideas

Series: Routledge Studies in Contemporary Philosophy

This book argues against the received view of propositional theory, according to which mental attitudes—such as believing, knowing, hoping, and wishing—are relations held between agents and propositions.

Roughly speaking, propositions are primary bearers of truth that are neither sentences nor utterances of sentences, be it of a public language or of a language of thought. This book argues that the propositional theory does not provide a solution to Frege’s puzzle about belief, which arises if we formulate disquotational principles connecting sincere assertion and belief, certain standards regarding rationality, and semantic principles such as the theory of direct reference within the framework of the propositional theory. This suggests that we must reject the propositional theory. The book emphasises this again by showing that the propositional theory cannot solve Schiffer's puzzle regarding de re belief, which, in addition to disquotational principles connecting sincere assertion and belief, uses highly plausible exportation and rationality principles for de re belief. It then discusses possible alternatives to the propositional theory, such as Marcus’ theory of states of affairs, Lewis’ property account, Larson and Ludlow’s theory of interpreted logical forms, and Moltmann’s Multiple Relation Theory. Just like the propositional theory, these theories maintain that mental attitudes such as believing are relations, and they also inherit the main problems of the propositional theory. Therefore, the author proposes and develops a non-relational account of the attitudes in question that together with a measurement account of the respective attitude ascriptions, provides a solution to both Frege’s puzzle and Schiffer’s puzzle.

On Frege Puzzles will appeal to scholars and graduate students working in philosophy of language, philosophy of mind, and logic.

By: Stefan Rinner (University of Duisburg-Essen Germany)
Imprint: Routledge
Country of Publication: United Kingdom
Dimensions: Height: 229mm, Width: 152mm,
Weight: 453g
ISBN: 9781032957524
ISBN 10: 1032957522
Series: Routledge Studies in Contemporary Philosophy
Pages: 212
Publication Date: 30 July 2025
Audience: College/higher education , Further / Higher Education
Format: Hardback
Publisher's Status: Forthcoming

Introduction 1. Frege’s Puzzle 2. Frege Puzzles for Fregeans 3 Frege Puzzles for Russellians 4. Propositionalism and Schiffer’s Puzzle 5. Rejecting Relationalism

Stefan Rinner is an assistant professor at the University of Duisburg-Essen. His research focuses on the philosophy of language and related areas, including propositional attitude ascriptions and the semantics of referring expressions. He has published several articles on these topics in leading journals, such as Synthese and Erkenntnis.