In 48 BC, during Caesar's Civil War, Julius Caesar was besieged at Alexandria. His soldiers set fire to some of the Egyptian ships docked in the Alexandrian port while trying to clear the wharves to block the fleet belonging to Cleopatra's brother Ptolemy XIV. This fire purportedly spread to the parts of the city nearest to the docks, causing considerable devastation. The first-century AD Roman playwright and Stoic philosopher Seneca the Younger quotes Livy's "Ab Urbe Condita Libri", which was written between 63 and 14 BC, as saying that the fire started by Caesar destroyed 40,000 scrolls from the Library of Alexandria. The Greek Middle Platonist Plutarch ( 46–120 AD) writes in his "Life of Caesar" that, "[W]hen the enemy endeavored to cut off his communication by sea, he was forced to divert that danger by setting fire to his own ships, which, after burning the docks, thence spread on and destroyed the great library." The Roman historian Cassius Dio ( 155 – 235 AD), however, writes: "Many places were set on fire, with the result that, along with other buildings, the dockyards and storehouses of grain and books, said to be great in number and of the finest, were burned." However, Florus and Lucan only mention that the flames burned the fleet itself and some "houses near the sea".