Fot. Stanislaw Kowalczuk / East News Warszawa, 25.04.2014. Na kosciele Dobrego Pasterza na Woli zawieszono dwa portrety kanonizowanych papiezy, Jana Pawla II i Jana XXII

This picture taken on April 21, 2014 shows postcards depicting Pope John XXIII (L) and Pope John Paul II sold in a shop in central Rome. Pope Francis aims to unite conservative and reformist strands of Catholicism with the first canonisation of two popes this month -- an impressive coup de theatre that has already stirred dissent in some quarters. Conferring sainthood on John XXIII and John Paul II means bringing together two distinct schools of thought on what a pope should be -- a humble parish priest figure or a globetrotting, charismatic superstar. AFP PHOTO / TIZIANA FABI

PHOTO: EAST NEWS/AFP PHOTO Picture of pope John XXIII (C) signing one piece of the encyclical "Pacem in Terris", in his private library, 09 April 1963, in Rome. On the left, cardinal Cicognani, state secretary of the vatican. (B&W ONLY).

PHOTO: EAST NEWS PAPIEZ JAN XXIII PODCZAS ODPRAWIANIA MSZY BOZONARODZENIOWEJ W SWIATYNI W WATYKANIE Photo prise le 25 d??cembre 1962, du pape Jean XXIII c??l??brant la premiA?re des trois messes de no??l dans la chapelle priv??e du Vatican. (N&B SEULEMENT) picture of pope John XXIII (C) celebrating one of the three mass of Christmas Eve in the private chapel in Vativan, 25 December 1962. (B&W ONLY)

Pope John XXIII holds his hat against a strong wind, as he leaves the Basilica of Saint Paul Outside the Walls after an impromptu visit, Jan. 25, 1962, the anniversary of the conversion of St. Paul. (AP Photo/Mario Torrisi)

Pope John XXIII with Bernard Cardinal Alfrink, Archbishop of Utrecht, the Netherlands, in the Pontiff's private library during an audience granted Jan. 18, 1962. (Ap Photo/Luigi Felici)

PHOTO: EAST NEWS CZARNO-BIALY PORTRET ARCHIWALNY PAPIEZA JANA XXIII. Photo d'archives non dat??e prise ?. Rome en Italie du Pape Jean XXIII. (N&B seulement) Undated file picture of Pope John XXIII, in Rome Italy. (B&W ONLY)