This book explores the idea that there is a certain performativity of thought connecting Kant’s Critique of Pure Reason and Wittgenstein’s Tractatus Logico-Philosophicus. On this view, we make judgments and use propositions because we presuppose that our thinking is about something, and that our propositions have sense. Kant’s requirement of an a priori connection between intuitions and concepts is akin to Wittgenstein’s idea of the general propositional form as sharing a form with the world.  

Aloisia Moser argues that Kant speaks about acts of...