He wanted to imitate the sacrifice of Jesus Christ by giving his entire life to his neighbour, keeping nothing for himself, mortifying himself constantly till the end. He wanted to become a "copy of Jesus"; he had a great love for the humanity of the Son of God, he felt a strong thirst for God that could be satisfied only in the Eucharist.
He did not disregard the practice of some popular religiosity; one of them was the Communion of Saints, then there was his devotion to an array of saints: from the Blessed Virgin to St. Joseph, St. Luigi to St. Philip Neri, from St. Francis to St. Cajetan of Thiene, to the three saintly Mary’s of the Gospel. His whole life had been like an Oratory shared with all the saints, whose presence he felt as though real.
He has not left writings of great theological value but there are a few personal notes and above all there are numerous letters he wrote to his Sisters encouraging them and guiding their spiritual journey; he instilled in them the depth of his Christian and priestly life. We can perceive in them the essence of his apostolic zeal.