“In the gallery, I became better acquainted with artists from the early part of our own century […], in particular the painter of atmospheres, Friedrich. It is remarkable how all of a sudden, hitherto overlooked artists are emerging from all sides. But our [Philipp Otto] Runge is the most important by far.” – Alfred Lichtwark, director of the Hamburger Kunsthalle, after a visit to the Dresden Gemäldegalerie, August 22, 1893, quoted in Lichtwark 1896, p. 249.