"....With these works, von Grumbkow offers us an experience of color spaces that dissociates the perception of the purely optical and material reality of color from those visual experiences comparable to the observation of nature. Von Grumbkow is actually able to synthesize the spiritual and the concrete thar Newman speaks about."
— Taken from the catalogue Towards color/Wege zur Farbe. 2005, Epikur Galleries, Wuppertal
„Thus he creates spaces which on one hand don't mean to pretend to be anything but spread-on paint, but which on the other hand open up surprising new perceptions, perceptions of limitless depth, of balance and tension, of the passage of time and of timelessness.“
— Taken from the catalogue "Blurring", Galerie Epikur, Wuppertal and Rothenbuchner, Vienna, Austria.
„In a time where there is a surfeit of pictures Christian v. Grumbkow gives great importance to such an instruction in perception. In coming to terms with art he sees a chance of learning how to see. For him the viewing of pictures makes possible radical experiences which are authentic and therefore vital for human sensibility. They represent a counterpoint to second-hand experiences, which more and more determine our lives.“
— Dr. Ulrike Becks-Malorny, Wuppertal, 1996, Translation: Karl Hiller, New York.