The motive which induced Pausanias to murder Philip in this manner was never fully ascertained. There were various opinions about it. One was, that it was an act of private revenge, occasioned by some neglect or injury which Pausanias had received from Philip. Others thought that the murder was instigated by a party in the states of Greece, who were hostile to Philip, and unwilling that he should command the allied armies that were about to penetrate into Asia. Demosthenes, the celebrated orator, was Philip's great enemy among the Greeks. Many of his most powerful orations were made for the purpose of arousing his countrymen to resist his ambitious plans and to curtail his power. These orations were called his Philippics, and from this origin has arisen the practice, which has prevailed ever since that day, of applying the term philippics to denote, in general, any strongly denunciatory harangues.