Of one thing this holy woman was absolutely convinced--unless the motive with which the work was undertaken was supernatural, neither perseverance nor success could be expected. "It is of little use for us to run about the streets with bowls of soup," she would say, "if we do not make the love of God the object of our effort. If we let go of the thought that the poor are His members, our love for them will soon grow cold." To pray, to labor and to obey was to be the whole duty of the members of the little sisterhood. The strength of their influence was to be the fact that it was Christ to whom they ministered in the person of His poor. To many of these girls, rough and ignorant as they were for the most part, life in a great town was full of dangers. Such work as theirs could only be adequately done by women whose lives were consecrated to God, who were prepared to spend themselves without stint or measure in His service. "If you aspire to perfection, you must learn to die to self" was the teaching of their foundress. Louise le Gras was a soul of prayer, and she knew that more was needed than fervent philanthropy and a heart full of pity to give the Sisters courage for the lives they had undertaken to lead. Uncloistered nuns were at that time a thing unheard of, and in the first days of the little company the Sisters were often greeted with insults when they appeared in the streets. In Vincent's own words, they were "a community who had no monastery but the houses of the sick, no cells but a lodging of the poorest room, no cloisters but the streets, no grille but the fear of God, and no veil but their own modesty." Their life was hard. They rose at four, their food was of the plainest description, they spent their days in an unhealthy atmosphere and were habitually overworked. The life of a true Sister of Charity needed to be rooted and nourished in the love of God, and no one realized it more completely than Vincent himself. In his weekly conferences, when they met together at St. Lazare, he would set before them the ideals of their vocation, bidding them above all things to be humble and simple. "You see, my sisters," he would say to them, "you are only rough country girls, brought up like myself to keep the flocks." He understood their temptations and knew their weaknesses, but the standard was never to be lowered. "The Daughters of Charity must go wherever they are needed," he said, "but this obligation exposes them to many temptations, and therefore they have special need of strictness." They were never to pay a visit unless it was part of their work; they were never to receive one; they were not to stand talking in the street unless it was absolutely necessary; they were never to go out without leave. "What?" Vincent makes them say in one of his conferences, "do you ask me to be my own enemy, to be forever denying myself, to do everything I have no wish to do, to destroy self altogether?"