Wolfgang Welsch, 1946, is emeritus professor of theoretical philosophy at the Friedrich Schiller University of Jena. Among his most important publications they are: Unsere Moderne postmoderne [Our postmodern modernity] (1987, 2008 7th ed.); Ästhetisches Denken [Aesthetic Thought] (1990, 2010 7th ed.); Vernunft. Die zeitgenössische Vernunftkritik und das Konzept der Vernunft transversalen [Reason. Contemporary critique of reason and the concept of transversal reason] (1995, 4th ed. 2007).