 His best known play is "Capul de rățoi" ("The Drake's Head"), written in 1938, and acknowledged as an early example of absurdist theatre.This play draws on his adolescence and friendship with Urmuz.Late in his life, he authored an autobiography, "Măscărici și Mâzgălici" (translatable as "Jester and Scribbler"), which notably contains versions of several texts by Urmuz (as memorized by Ciprian), as well as details on the latter's final years.