The difference between them is subtle but goes very deep. For both the ultimate and internal significance of what they painted counted for more than the significance which is momentary and external. Cezanne saw in a tree, a heap of apples, a human face, a group of bathing men or women, something more abiding than either photography or impressionist painting could present. He painted the "treeness" of the tree, as a modern critic has admirably expressed it. But in everything he did he showed the architectural mind of the true Frenchman. His landscape studies were based on a profound sense of the structure of rocks and hills, and being structural, his art depends essentially on reality. Though he did not scruple, and rightly, to sacrifice accuracy of form to the inner need, the material of which his art was composed was drawn from the huge stores of actual nature. Gauguin has greater solemnity and fire than Cezanne. His pictures are tragic or passionate poems. He also sacrifices conventional form to inner expression, but his art tends ever towards the spiritual, towards that profounder emphasis which cannot be expressed in natural objects nor in words. True his abandonment of representative methods did not lead him to an abandonment of natural terms of expression--that is to say human figures, trees and animals do appear in his pictures. But that he was much nearer a complete rejection of representation than was Cezanne is shown by the course followed by their respective disciples. The generation immediately subsequent to Cezanne, Herbin, Vlaminck, Friesz, Marquet, etc., do little more than exaggerate Cezanne's technique, until there appear the first signs of Cubism. These are seen very clearly in Herbin. Objects begin to be treated in flat planes. A round vase is represented by a series of planes set one into the other, which at a distance blend into a curve. This is the first stage. The real plunge into Cubism was taken by Picasso, who, nurtured on Cezanne, carried to its perfectly logical conclusion the master's structural treatment of nature. Representation disappears. Starting from a single natural object, Picasso and the Cubists produce lines and project angles till their canvases are covered with intricate and often very beautiful series of balanced lines and curves. They persist, however, in giving them picture titles which recall the natural object from which their minds first took flight. With Gauguin the case is different. The generation of his disciples which followed him--I put it thus to distinguish them from his actual pupils at Pont Aven, Serusier and the rest--carried the tendency further. One hesitates to mention Derain, for his beginnings, full of vitality and promise, have given place to a dreary compromise with Cubism, without visible future, and above all without humour. But there is no better example of the development of synthetic symbolism than his first book of woodcuts.