Paul Klee (18 December 1879 – 29 June 1940) was a Swiss-German painter. His highly individual style was influenced by movements in art that included Expressionism, Cubism, and Surrealism. Klee was a natural draftsman who experimented with and eventually deeply explored colour theory, writing about it extensively. He and his colleague, Russian painter Wassily Kandinsky, both taught at the Bauhaus school of art, design and architecture. His works reflect his dry humour and his sometimes childlike perspective, his personal moods and beliefs, and his musicality.