There is a vast difference between an Apostolic life and the solitude of the Carthusians. The latter is truly very holy but is not suited to those whom God has called to the former, which is in itself more excellent.
Vincent de Paul[I]n order to raise a soul to the highest perfection, He allows it to pass through dryness, brambles, and combats, causing it thereby to honor the times of weariness in the life of His Son, Our Lord, who suffered various kinds of anguish and abandonment.
Vincent de Paul. . . [T]hese [ideas] are only suggestions of the evil spirit who, to jeopardize your salvation, suggests to you extraordinary works that are beyond your strength, under the fine pretext of practicing, on your own, the spiritual and corporal works of mercy . . .
Vincent de Paul