Paul VI knew his figure, having been an assistant to the FUCI for many years; he had a rich and important correspondence with Pier Giorgio's father, accompanying him spiritually until his death. We owe to him the resumption of the cause of beatification.
On the occasion of the 7th anniversary of his death, on July 3, 1932, Monsignor Montini, the future Paul VI, stated in the parish of Crocetta in Turin
«How can we still be Christians? Pier Giorgio answers with life. It is a first, intuitive answer that stands out in the eyes of anyone who observes that life, whether he is a brother in faith or not. He is strong. His physical profile reveals this characteristic, so dear to young people and so exalted by modern people. He was robust, healthy, upright. This is how those who looked at him from the outside saw him. Before realizing that he was of a holy soul, they saw that he was of a strong soul. He was strong because he was austere. Austere and sweet and alive. Because from communion with God the consoler, sweet guest of the soul, interior freshness, you drew vivifying nourishment. Between your external work, your internal moral rectitude and your assiduity at the altar of God there is a very certain relationship. One day perhaps the Church will tell us that truly everything for you is from the strength of God, the secret of your youth».
On September 2, 1963, however, he recalled:
Do not believe that the objective demands of truth and the protection with which the Church presides over its religious truth have to hinder the freedom of your studies and your intellectual profession. Preserve "the passion of fidelity" to the Church, which was the glorious prerogative of the FUCI from its first steps; and preserve as a heritage, which is not a burden to carry, but a reserve of energy, the example of the best who gave the FUCI a living, modern and Christian face, such as Monsignor Giandomenico Pini, Pier Giorgio Frassati, Igino Righetti, Renzo De Sanctis, Sergio Paronetto, Teresio Olivelli, Carlo Bianchi, Itala Mela, Monsignor Luigi Pelloux, Luigi Scremin, to name just a few of those who preceded us in the next life.