41 We have weighed every word of this letter in the balance of truth and love. We wished neither to be an accomplice to equivocation by an untimely silence, nor by excessive severity to harden the hearts of those who live under Our pastoral responsibility; for Our pastoral love pursues them none the less for all their infidelity. Should those who are trying to adapt their mentality to their new surroundings, have for the paternal home they have left and for the Father Himself, nothing but words of distrust, in gratitude or insult, should they even forget whatever they forsook, the day will come when their anguish will fall on the children they have lost, when nostalgia will bring them back to "God who was the joy of their youth," to the Church whose paternal hand has directed them on the road that leads to the Father of Heaven.
Source: Mit Brennender Sorge (Vatican.va)