Today is the anniversary of the death in 1940 of artist Paul Klee. There is a short biography and pictures of some of his work here at MetMuseum.org, which says, "Klee is known for his simple stick figures, suspended fish, moon faces, eyes, arrows, and quilts of color, which he orchestrated into fantastic and childlike yet deeply meditative works.". MoMA has information on him here. There is a short bio and some information about his most famous work here at ibiblio.org. There is an online gallery of some of his work here.
The picture above is of his Head of a Man. The picture below is of Twittering Machine.
Ad Parnassum (1932) is considered his masterpiece:
From the podcast series featuring highlights of the Kunstmuseum Bern's collection, this video explains how Ad Parnassum was created and how it might be interpreted:
Klee died at the age of 60 of scleroderma. He was granted his long-sought Swiss citizenship 6 days after his death. Though born in Switzerland, Swiss citizenship was (is?) conferred through the father. His mother was Swiss, and he was born in Switzerland; but his father was German, so he was considered a German citizen.