Karl-Otto Apel is one of the most important German philosophers of the 20th century, and is finally coming to be recognized as such. However, his work is still poorly understood and inadequately treated throughout most of the world. In The Adventures of Transcendental Philosophy, critical theory scholar Eduardo Mendieta examines the philosophical origins of discourse ethics through the prism of Apel's thought. Mendieta finds that Apel fundamentally transformed German philosophy, which had become stagnant in the years before World War II, and deeply influenced later thinkers such as Jürgen Habermas. Apel's turn toward pragmatism and analytic philosophy helped him bring the concept of a linguistic paradigm shift to Germany.