M.C. Escher: Challenging Reality M.C. Escher was a master of perspective. He challenged reality, and his critics' minds. His artwork was considered to be highly mathematical, even though Escher never had any formal training in the math or sciences. Yet artists around the still world regard his work as great. Escher was able to manipulate geometry to create illusions that were often used to tell a story. In Day and Night and Ascending and Descending, Escher illustrated daily events and their meaning by using his artistic and mathematical techniques. In Day and Night, one of Escher's most acclaimed pieces, the idea of transformation fr