It sometimes seems to me that we are all afflicted with an urge and possessed by a longing for the impossible. The reality around us, the three-dimensional world surrounding us, is too common, too dull, too ordinary for us. We hanker after the unnatural or supernatural, that which does not exist, a miracle. As if that everyday reality isn’t enigmatic enough!

M. C. Escher (1898-1972) Dutch artist [Maurits Cornelius Escher]
“The Impossible”