One peculiar mark of the youth, and even of the whole life of Augustin, is the ease with which he unlearns and breaks off his habits--the sentimental as well as the intellectual. He used up a good many doctrines before resting in the Catholic truth; and even afterwards, in the course of a long life, he contradicted and corrected himself more than once in his controversies and theological writings. His _Retractations_ prove this. One might say that the accustomed weighs on him as a hindrance to his liberty; that the look of the places where he lives becomes hateful to him as a threat of servitude. He feels dimly that his true country is elsewhere, and that if he must settle anywhere it is in the house of his Heavenly Father. _Inquietum est cor nostrum, donec requiescat in te...._ "Restless are our hearts, O my God, until they rest in Thee." Long before St. Francis of Assisi, he practised the mystic rule: "As a stranger and a pilgrim." It is true that in his twentieth year he was very far from being a mystic. But he already felt that restlessness which made him cross the sea and roam Italy from Rome to Milan. He is an impulsive. He cannot resist the mirages of his heart or his imagination. He is always ready to leave. The road and its chances tempt him. He is eager for the unknown. He lets himself be carried in delight by the blowing wind. God calls him; he obeys without knowing where he goes. This unsettled young man, halting between contrary passions, who feels at home nowhere, has already the soul of an apostle. This changeableness of mood was probably the true cause of his departure for Thagaste. But other more apparent reasons, reasons more patent to a juvenile consciousness, guided him also. No doubt he was not sorry to reappear in his little town, although he was so young, with the importance and authority of a master. His former companions were going to become his pupils. And then the Manichees had fanaticized him. Carried away by the neophyte's bubbling zeal, elevated by his triumphs at the public meetings in Carthage, he meant to shine before his fellow-countrymen, and perhaps convert them. He departed with his mind made up to proselytize. Let us believe also, that in spite of his dissolute life, and the new passion that filled his heart, he did not come back to Thagaste without an affectionate thought at the back of his head for his mother.