55 It is true of course that the holy Cure's fame made great crowds of sinners flock to Ars, while many priests experience great difficulty in getting the people committed to their care to come to them at all, and then find that they have to teach them the most elementary truths of Christian doctrine just as if they were working in a missionary land. But as important and sometimes as trying as these apostolic labors may be, they should never be permitted to make men of God forget the great importance of the goal which they must always keep in view and which St. John Vianney attained through dedicating himself completely to the main works of the apostolic life in a tiny country church.
Source: Sacerdotii Nostri Primordia (Vatican.va)