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"a sort of conceptual abstraction for your walls." Against our wishes for clean aluminum concepts and graspable truths, a "conceptual abstraction" is like having mud in your mind - an ungraspable muck, inside your head. And Euler's feel loose, threaten spillage, a filth inside. Do not open them up in here. It will get everywhere. I am not the cleaner, I cannot keep up with this level of dust. They watch you now. They will see you get it on you, your projection, a woman turning horse.