Notre Dame de Paris
The Fathers seem never so happy as when, on Easter morning, they are worn out and speechless with fatigue—that is their alleluia !" You abuse your strength," said a friend to one of these indefatigable laborers; "nature can not bear such an excess of work." "After me—another" was the simple and almost careless reply. His Superior, to whom it was remarked, on Easter Monday of 1859, that he must be very much fatigued with the past week's labor, answered: "Ah, we have had great consolations! There have been many conversions; our ministry has been blessed; the confessionals were crowded. The Lord be praised!"
Of his great fatigue, of his weak health—not a word! The ministry at Paris, during the winter, is overwhelming. When a Jesuit is exhausted, they give him a vacation; they send him to preach a retreat in the provinces. So as to lose no time, he travels by night, and generally ascends the pulpit on the day of his arrival. After the first exercises, he is called to hear confessions, and thenceforth all his time is divided between the pulpit and the confessional; that is what they call vacation.
Link (here) read the full account of the Parisian Jesuits in the book entitled, The History of the Society of Jesus