Maurits Cornelis Escher is a Dutch graphic artist known for his often mathematically inspired woodcuts, lithographs, and mezzotints which feature impossible constructions, explorations of infinity, and tessellations. He portrayed mathematical relationships among shapes, figures and space. Although he had no formal training in mathematics, Escher's understanding of math was largely visual and intuitive. Additionally, he explored interlocking figures using black and white to enhance different dimensions. Integrated into his prints were mirror images of cones, spheres, cubes, rings, and spirals. During his lifetime, Escher made 448 lithographs, woodcuts and wood engravings, and over 2000 drawings and sketches. Escher's work shows his keen observation of the world around us and the expressions of his own fantasies.