The teacher was dependent on the emperor (as we have seen) for his appointment. Sometimes a man would be directly appointed by the emperor, as Eumenius was,[826] but generally in Gaul, as at Antioch,[827] he would be nominated by his municipality, and his nomination would be subject to the approval of the imperial patron,[828] to whom he looked for all good things. The Gaul of Panegyric VI speaks of ‘privatorum studiorum ignobiles curae’, and the suggestion is that it is the approving glance of the emperor that makes them ‘nobiles’. Eumenius clearly brings out this relation between the teachers and the emperors, who are praised because they found time to appoint schoolmasters as well as masters of the horse.[829] And finally, both teacher and student depended on the emperor for promotion. Imperial service was the conscious motive of education, and the rhetor could count among the officials of the empire many a former pupil. One of the panegyrists looks proudly and wistfully back to those who left his school and rose high in the forum or the offices of the palace, and fondly thinks of them as his children. ‘For many and not ignoble are the streams that take their course from me,’ he exclaims to the emperor, ‘many whom I guided have risen to govern thy provinces.’[830] The reason why the emperors take so much care to appoint efficient teachers is, ‘lest those who ought to be appointed to the various forms of State service should be overtaken, as it were, by a sudden cloud midway on the waves of youth, and steer their course by doubtful stars of oratory.’[831] The service of the emperor is so obviously the best, that anything else looks like partial shipwreck. The imperial goal dominates everything. Ausonius served, like many of the Bordeaux teachers, on the municipality of his town, and rose to be consul and prefect. Even a man like Exsuperius, whom Ausonius criticizes as a trivial talker,[832] could become governor of a province. So much was a public career the fashion that Ausonius expresses surprise at Alcimus for keeping out of the imperial service: Quod laude clarus, quod operatus litteris, omnem refugisti ambitum.[833] All this finds its counterpart, of course, in the direct encouragement of the emperors. If Constantine had merely said: ‘We allow teachers to stand for office, if they wish, but do not compel them,’[834] Constantius, with an enthusiasm for letters rarely paralleled among princes, could promise that he would promote to higher rank him who by his studies and eloquence seemed to be worthy of the first place. ‘For literature must not be denied her rewards—literature which is _the greatest of all virtues_.’[835]