Remain in the Peace of God

If, in spite of thy endeavors, men be unwilling to be converted, do not lose thy peace of heart.

Imitate the holy Guardian Angels, who, after having done whatever they should and could have done--if the men committed to their charge do not repent nor improve--remain equally peaceful, equally blissful.

from The Imitation of the Sacred Heart of Jesus, Book II, chapter xvii, 5.