Saint Vincent Pallotti strove with fervour for the preparation of clerics and religious for apostolic activity. He was a professor at the Roman “Sapienza” University and spiritual director of the Propaganda Fide College, where future missionaries were prepared. He was also confessor and spiritual accompanier to many people of different social provenance. Two popes, Gregory XVI and Pius IX had their confessions heard by him. Saint Vincent Pallotti frequently withdrew from the activity of daily life in other to gather his energies in prayer and to renew his spiritual life in the Hermitage of the Camaldolese.All of these activities could be defined using the modern terminology of “religious formation”. The Society directs various centres of formation throughout the world. The most important are its own houses of formation (novitiates and major seminaries) where the candidates are prepared for future pastoral and apostolic work in the Society. The Society also directs a certain number of centres of formation where different religious communities can deepen their spiritual and religious life.