Wikipedia quote:

Maurits Cornelis Escher (17 June 1898 – 27 March 1972), usually referred to as M. C. Escher, was a Dutch graphic artist. He is known for his often mathematically inspired woodcuts, lithographs, and mezzotints. These feature impossible constructions, explorations of infinity, architecture, and tessellations.




Drawing hands





Relativity





Air and water





Three worlds





Horsemans





Drop of dew





Stairs





Dragon





Day and night





Up and down





Cycle