The German art historian and curator Matthias Flügge during the opening speech of an exhibition in 2016 in the Kunsthaus of the Achim Freyer Foundation in Berlin-Lichterfelde
<a href="//commons.wikimedia.org/wiki/User:Roderich_Kahn" title="User:Roderich Kahn">Roderich Kahn</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>