[Sidenote: Frontinus. Various writers.] Of the technical writings of this period only two now exist: the _Stratagems_ (_Strategemata_) and the treatise on the Roman aqueducts (_De Aquis Urbis Romæ Libri II_), by Sextius Julius Frontinus, a man of some distinction, who was prætor in 70 A. D., consul several times, and was appointed _Curator Aquarum_, or overseer of the water supply of Rome, in 97 A. D. His writings belong rather to the history of technical studies than to that of literature. The names of several authors of memoirs of travels, legal treatises, speeches, histories, and technical writings of various kinds are known to us, but their works are lost or only partially preserved as unsatisfactory fragments. The schools of grammar and rhetoric continued to exist, and many teachers of these subjects enjoyed considerable reputation. The greatest among them, and the only one whose work has survived to modern times, is Quintilian, the last, and in some respects the greatest, of the Spanish writers of Rome. [Sidenote: Quintilian.] Marcus Fabius Quintilianus was born at Calagurris, in Spain, about 35 A. D. He was educated at Rome under the most distinguished teachers of the time, and when his education was completed returned to his native place. But in 68 A. D., Galba, who had been governor in Spain before he became emperor, called Quintilian to Rome. Here he became a teacher of rhetoric, and received a salary from the imperial treasury. At the same time he was a prominent barrister, but published only one speech, though others were published without his authority from shorthand reports. He was a man of great influence, and was even raised to the consulship by Domitian, who had appointed him tutor of his grandnephews. After teaching for twenty years he gave up his school and devoted himself to the composition of his great work, the _Institutio Oratoria_. This was published about 93 A. D. An earlier work, _On the Reasons for the Decay of Oratory_ (_De Causis Corruptæ Eloquentiæ_), is lost. Quintilian’s private life was not free from trouble. He married at an advanced age, but his wife died when only eighteen years old, his younger son soon after at the age of five, and his elder son after a brief interval at the age of nine. When Quintilian died is not known, but he can hardly have lived long after 100 A. D. [Sidenote: Institutio Oratoria.] The title _Institutio Oratoria_, given by Quintilian to his work, designates it as a text-book of oratory. But it is no mere technical treatise on the art of speaking. Quintilian was an enthusiastic lover of his profession, and believed that oratory was the highest expression of human thought and human life. Like Cato, he demanded that the orator be not merely a good speaker, but also, and first of all, a good man. He must also have a general literary education before proceeding to the technical study of oratory.