'Denk-Bilder'
"Die Wandtafelzeichnungen sind ein noch unausgeschöpfter Fundus kreativen Denkens und Zeichnens, der wohl noch viele Künstler und hoffentlich ein wachsendes Kunstpublikum zu jenen 'höheren Formen menschlicher Kreativität' anregen wird, die - nach R. Steiner und J. Beuys - Imagination, Inspiration und Intuition sind".
Guido Magnaguagno, Direktor Tinguely Museum Basel

After the blackboard drawings had been exposed for the first time at the gallery Monika Sprüth in Cologne/Germany, they have travelled unremittingly worldwide through the contemporary museums. Some catalogues were published, the international press became attentive and Rudolf Steiner was put into a new context to modern art. Even composers were inspired by the 'cosmic drawings' and their works had their premiere at opening nights.