Read it through once

[Line 675: Longinus, a Platonic philosopher and famous rhetorician, born either in Syria or at Athens about 213 A.D., was probably the best critic of antiquity. From his immense knowledge, he was called "a living library" and "walking museum," hence the poet speaks of him as inspired by _all the Nine_--Muses that is. These were Clio, the muse of History, Euterpe, of Music, Thaleia, of Pastoral and Comic Poetry and Festivals, Melpomene, of Tragedy, Terpsichore, of Dancing, Erato, of Lyric and Amorous Poetry, Polyhymnia, of Rhetoric and Singing, Urania, of Astronomy, Calliope, of Eloquence and Heroic Poetry.]