Jaroslav Peregrin is the research professor at the Department of Logic of the Institute of Philosophy of the Czech Academy of Sciences and a professor at the Faculty of Philosophy of the University of Hradec Králové, Czechia. He is the author of Doing Worlds with Words (1995), Meaning and Structure (Ashgate, 2001), Inferentialism (2014) and Reflective Equilibrium and the Principles of Logical Analysis (together with V. Svoboda; Routledge, 2017). His current research focuses on logical and philosophical aspects of inferentialism and on more general questions of normativity.