Paul Klee was born in Switzerland in 1879; he was born in a family of musicians but later he turned to art, so in 1898 he studied at the Academy of Fine Arts in Munich.
When the war started, he joined the army. A the start he said that he would be indifferent but when his two friends died in the battlefield, he was in agony. Soon he turned his distress into pen and ink lithographs on war themes and abstract artworks. Klee was inspired by multiple types of art such as Futurism, Cubism, Dadaism but his biggest inspiration was Kadinsky, godfather of abstraction and his friend.
In 1923 Kadinsky and Klee formed a group with two other artists called the Blue Four, while he was teaching art at the Bauhaus from 1921 to 1931. Then he taught art at the Dusseldorf Academy for two years when the Nazis fired him because of his degenerate ideology. So he moved back to Switzerland with his family where he died due to wasting disease and scleroderma and died in 1940.
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