Six Characters in Search of an Author (Italian: Sei personaggi in cerca d'autore) is a 1921 Italian play by Luigi Pirandello, first performed in that year. An absurdist metatheatrical play about the relationship between authors, their characters, and theatre practitioners, it premiered at the Teatro Valle in Rome to a mixed reception, with shouts from the audience of "Manicomio!" ("Madhouse!") and "Incommensurabile!" ("Incommensurable!"), a reference to the play's illogical progression.