Paul Klee Paul Klee (1879 – 1940) Swiss. Expressionism, cubism and surrealism influence (orientalism, too). Klee (draftsman)experimented with and eventually mastered colour theory, and wrote extensively about it; his lectures Writings on Form and Design Theory (Paul Klee Notebooks) it was compared with Leonardo da Vinci's A Treatise on Painting.
Ernst Ludwig Kirchner, Self-Portrait with Erna, 1922. MFA, Boston. Kirchner (1880–1938) was a German expressionist painter and printmaker and one of the founders of the artists group Die Brücke or “The Bridge”, a key group leading to the foundation of Expressionism in 20th-century art. He volunteered for army service in the First World War, but soon suffered a breakdown and was discharged. In 1933, his work was branded as “degenerate” by the Nazis and in 1937 over 600 of