-1965 1694-1778 1879-1940 1885-1961 1901-1974 1914-1918 20thcentury 809 anxietyinart architecture artandthewar artcollectionsthompson catalogs civilization correspondenceklee criticismandinterpretationkahn criticismandinterpretationsironi düsseldorf exhibitions frenchliterature18thcenturyenlightenmentcriticism german germany humanbeingsinart iran kahn klee knowledge kunstsammlungnordrhein-westfalen(germany) louisi mario melancholyinart motivesklee musicklee painting painting20thcentury paul philosophy place(philosophy) place(philosophy)inarchitecture politicalandsocialviewsklee socialaspects themes voltaire worldwar