But Quintilian, Valerius Flaccus, and Martial[428] all load him with praise of various degrees of fulsomeness, though, reading between the lines of Quintilian, it is easy to see that Domitian's output must have been exceedingly small. The evidence of these three authors goes to show that he had contemplated, perhaps even begun, an epic on the achievements of his brother Titus in the Judaic War. Whether these _caelestia carmina belli_, as Martial calls them, ever existed, save in the imagination of courtiers and servile poets, there is nothing to show. If they did exist there seems no reason to regret their loss. Domitian's chief service to literature, if indeed it was a true service, was the establishment of the Agon Capitolinus in 86, a quinquennial festival at which prizes were awarded not only for athletics and chariot-racing, but for declamations in verse and prose,[429] and the institution of a similar, though annual, contest at his own palace on the Alban Mount, which took place as often as the great festival of Minerva, known as the Quinquatria, came round.[430] But his interest in literature was only superficial; he had no originality and read nothing save the memoirs and edicts of Tiberius.[431] His capricious cruelty extended itself to artists and authors;[432] twice (in 89 and 93 A.D.), following his father's example, he banished philosophers and astrologers from Rome;[433] the crime of having written laudatory biographies of the Stoics Thrasea and Helvidius Priscus brought Arulenus Rusticus and Herennius Senecio to their deaths.[434] But Domitian's tyranny had little effect on _belles-lettres_, however adverse it may have been to free-spoken philosophy, rhetoric, or history. Valerius Flaccus, Silius, Statius, and Martial, all wrote during his reign, and the works of the last-named poet and Quintilian give ample evidence of widespread literary activity. The minor poet replenished the earth, and the prizes for literature awarded at the Agon Capitolinus and the festival of the Alban Mount must have been a real stimulus to writing, even though the type of literature produced by such a stimulus may have been scarcely worth producing. The worst feature of the poetry of the time is the almost incredibly fulsome flattery to which the tyranny of Domitian gave rise. As a compensation we have in the two succeeding reigns the biting satire of Juvenal and Tacitus, rendered all the keener by its long suppression under the last of the Flavian dynasty.