In the late 19th century Paul Cézanne revolutionized Western painting. As Russell observed, "He rebuilt the experience of seeing. He rebuilt it on the canvas, touch by touch…it had to be true to the object seen…it had to be true to the experience of seeing." In essence, Cézanne was "reconstructing the act of cognition" (1, p. 31). Through this leap of the imagination and its realization on the canvas, Cézanne, alongside Manet, became the progenitor of Modernism, wherein the language of painting shifted radically in form and content and was no longer concerned with simply imitating nature. Picasso asserted, "Cézanne is the father of us all." Early in his career, when he could ill afford it, Matisse bought a small painting by Cézanne, which he kept in his studio throughout his creative life. A virtual icon, it was a constant inspiration. Both Picasso and Matisse, separately and distinctively, built on Cézanne's reconstruction of what we actually see and proceeded to extend his vision.