"All art needs this visible world and will always need it. Quite simply because, being accessible to all, it is the key to all other worlds. ** Quote from Zeichnungen von E. L. Kirchner, (under his pseudonym ) E. L. Kirchner, Genius 2, Book 2, 1921, 216-234, reprinted by National Gallery, Washington D.C. 2003, p. 226"