Jürgen Habermas is a German philosopher and sociologist in the tradition of critical theory and pragmatism. He is perhaps best known for his theories on communicative rationality and the public sphere. In 2014, Prospect readers chose Habermas as one of their favourites among the "world's leading thinkers".

Thomas McCarthy is the author of The Philosophical Discourse of Modernity: Twelve Lectures, published by Wiley.