Illusion - or rather appearance, semblance - is the theme of my life (could be theme of speech welcoming freshmen to the Academy). All that is, seems, and is visible to us because we perceive it by the reflected light of semblance. Nothing else is visible.
Gerhard Richter, Dietmar Elger, Hans-Ulrich Obrist (2009). “Gerhard Richter: text : writings, interviews and letters, 1961-2007”