description of Philip's private, drunken debauchery. For Polybius, it was inconceivable that such an able and effective statesman could have had an immoral and unrestrained private life as described by Theopompus. In recounting the Roman Republic, Polybius stated that "the Senate stands in awe of the multitude, and cannot neglect the feelings of the people". Other important themes running through The Histories are the role of Fortune in the affairs of nations, his insistence that history should be demonstratory, or apodeiktike, providing lessons for statesmen, and that historians should be "men of action" (pragmatikoi). Polybius is considered by some to be the successor of Thucydides in terms of objectivity and critical reasoning, and the forefather of scholarly, painstaking historical research in the modern scientific sense. According to this view, his work sets forth the course of history's occurrences with clearness, penetration, sound judgment, and, among the circumstances affecting the outcomes, he lays special emphasis on geographical conditions. Modern historians are especially impressed with the manner in which Polybius used his sources, particularly documentary evidence as well as his citation and quotation of sources. Furthermore, there is some admiration of Polybius' meditation on the nature of historiography in Book 12. His work belongs, therefore, amongst the greatest productions of ancient historical writing. The writer of the Oxford Companion to Classical Literature (1937) praises him for his "earnest devotion to truth" and his systematic pursuit of causation. It has long been acknowledged that Polybius' writings are prone to a certain hagiographic tone when writing of his friends, such as Scipio, and subject to a vindictive tone when detailing the exploits of his enemies, such as Callicrates, the Achaean statesman responsible for his Roman exile. As a hostage in Rome, then as client to the Scipios, and after 146 BC, a collaborator with Roman rule, Polybius was probably in no position to freely express any negative opinions of Rome. Peter Green advises that Polybius was chronicling Roman history for a Greek audience, to justify what he believed to be the inevitability of Roman rule. Nonetheless, Green considers Polybius' Histories the best source for the era they cover. For Ronald Mellor, Polybius was a loyal partisan of Scipio, intent on vilifying his patron's opponents. Adrian Goldsworthy, while using Polybius as a source for Scipio's generalship, notes Polybius' underlying and overt bias in Scipio's favour. H. Ormerod considers that Polybius cannot be regarded as an