Johannes von Kries (1853–1928) left a fascinating work: As a physiologist, he had a lasting influence on research into colour perception. As a philosopher, he formulated a theory of probability which was received not only in philosophy (Hans Reichenbach, Ludwig Wittgenstein), but also in physics (Ludwig Boltzmann, Max Planck), jurisprudence (Gustav Radbruch), sociology (Alfred Schütz, Max Weber), economics (John Maynard Keynes), and belles-lettres (Robert Musil). This anthology reconstructs some central lines of reception. It contexts Kries’ work in the history of ideas and examines its topicality.