Perhaps the Doors, Curtains, Surface Pictures, Panes of Glass [like in his work '4 Panes of Glass', 1967], etc. are metaphors of despair, prompted by… - Gerhard Richter

I pursue no objectives, no systems, no tendency; I have no program, no style, no direction. I have no time for specialized concerns, working themes, or variations that lead to mastery. I steer clear of definitions. I don't know what I want. I am inconsistent, non-committal, passive; I like the indefinite, the boundless; I like continual uncertainty.

The sciences certainly have influenced the arts. To an Aztec, the sunset was an inexplicable event, which he could not cope with or even survive without the imagined aid of his gods. Obvious phenomena of this sort have since been explained. But the sheer unimagined vastness of the explicable has now made the inexplicable into such a monstrous thing that our heads spin, and the old images burst like bubbles. The thought of the totally inexplicable (as when we look at the starry sky), and the impossibility of reading any sense into this monstrous vastness, so affect us that we need ignorance to survive.

In the beginning I tried to accommodate everything there that was somewhere between art and garbage and that somehow seemed important to me and a pity to throw away. After a while, some sheets in the Atlas acquired another value, after all – that is, it seemed to me that they could stand on their own terms, not only under the protection of the Atlas.