Peter Ulrich Weiss (8 November 1916 – 10 May 1982) was a German writer, painter, graphic artist, and experimental filmmaker of adopted Swedish nationality. He is particularly known for his plays Marat/Sade and The Investigation and his novel The Aesthetics of Resistance. Peter Weiss earned his reputation in the post-war German literary world as the proponent of an avant-garde, meticulously descriptive writing, as an exponent of autobiographical prose, and also as a politically engaged dramatist.
https://en.wikipedia.org/wiki/Peter_Weiss