 "Harmadnapon" contains his poem ("Apocrypha"), considered his chef-d'oeuvre, which many see as one of the highest peaks of Hungarian poetry.The poem has the return of the prodigal son to his parents in its center, and summarises Pilinszky's poetic world from his experiences in the lagers to his alienation and the painful absence of God from the world.From 1960 to 1970, he traveled the United States and Europe taking part in several poetry readings.