Hebrew Bible was reputed to have been initiated in Alexandria. Philo, a Hellenistic Jewish philosopher, operated out of Alexandria at the turn of the Common Era. In addition, it later became a major focal point for the development of Christian thought. The Musaeum, or Shrine to the Muses, which included the library and school, was founded by Ptolemy I. The institution was from the beginning intended as a great international school and library. The library, eventually containing more than a half million volumes, was mostly in Greek. It was intended to serve as a repository for every work of classical Greek literature that could be found. Poetry The genre of bucolic poetry was first developed by the poet Theocritus. The Roman Virgil later wrote his Eclogues in this genre. Callimachus, a scholar at the Library of Alexandria, composed the Aetia ("Causes"), a long poem written in four volumes of elegiac couplets describing the legendary origins of obscure customs, festivals, and names, which he probably wrote in several stages over the course of many years in the third century BC. The Aetia was lost during the Middle Ages, but, over the course of the twentieth century, much of it was recovered due to new discoveries of ancient papyri. Scholars initially denigrated it as "second-rate", showing great learning, but lacking true "art". Over the course of the century, scholarly appraisal of it greatly improved, with many scholars now seeing it in a much more positive light. Callimachus also wrote short poems for special occasions and at least one short epic, the Ibis, which was directed against his former pupil Apollonius. He also compiled a prose treatise entitled the Pinakes, in which he catalogued all the major works held in the Library of Alexandria. The Alexandrian poet Apollonius of Rhodes is best known for his epic poem the Argonautica, which narrates the adventures of Jason and his shipmates the Argonauts on their quest to retrieve the Golden Fleece from the land of Colchis. The poet Aratus wrote the hexameter poem Phaenomena, a poetic rendition of Eudoxus of Cnidus's treatise on the stars written in the fourth century BC. Drama During the Hellenistic period, the Old Comedy of the Classical Era was replaced by New Comedy. The most notable writer of New Comedy was the Athenian playwright Menander. None of Menander's plays have survived to the present day in their complete form, but one