August Klett, or Klotz (1866–1928), was a German outsider artist with schizophrenia and one of the "schizophrenic masters" profiled by Hans Prinzhorn in his field-defining work Artistry of the Mentally Ill.
After his illness he fell into a deep depression in which he heard hallucinatory voices insulting him.
[2] Klotz was placed in an asylum in Göppingen where his case notes describe him as engaged in art-making by August 1903.
[3] He often invented lengthy compound nouns, such as Halmdolchfischgradtropfeneweiss ("Stalk-dagger-fish-bone-drop-egg-white"), and his pictures sometimes feature shapes that have double meanings.
"He always allows himself to be driven by momentary impulses so that his pictures generally incorporate the unconscious components of pictorial creation in a rare state of purity ... he composes completely passively, almost as a spectator, and afterward tries to interpret his configurations".