Interview in Film Culture, no. 42 (1966), p. 101 https://books.google.it/books?hl=it&id=Jq2RAAAAIAAJ&dq=%22If+you+know%22.
Pier Paolo Pasolini was an Italian film director, poet, writer, and intellectual, who also distinguished himself as an actor, journalist, novelist, playwright, and political figure. He remains a controversial personality in Italy due to his blunt style and the focus of some of his works on taboo sexual matters. He was an established major figure in European literature and cinematic arts. His murder prompted an outcry in Italy and its circumstances continue to be a matter of heated debate. Wikipedia
Interview in Film Culture, no. 42 (1966), p. 101 https://books.google.it/books?hl=it&id=Jq2RAAAAIAAJ&dq=%22If+you+know%22.