The ambassador of Christ. [Excellence of the Christian Priesthood; On a Divine Vocation to the Sacred Ministry; The Marks of a Divine Vocation; The Duties of Preceptors toward their Scholars; Gratitude; Reverence for Teachers; Obedience to Teachers Observance of Rules; Truth and Sincerity of Character; Personal Advantages and Blessings of a Studious Life; Persevering Labor the Key to Knowledge; Di