This is a translation with detailed historical commentary of five speeches against Philip II of Macedon, of the fourth-century Athenian orator and political figure Demosthenes. The speeches were delivered over the period 351 (or 350) to 346 and have been chosen to illustrate the origins and growth of Demosthenes' anti-Macedonian policy, a platform which brought him (by about 343) to a position of prominence and influence unrivalled since the 'principate' of Pericles a century before. This book is intended as a basis for detailed undergraduate study of a well-documented period of Athenian foreign and internal policies; thus while unfamiliar and technical terms are explained, for wider problems the student is referred with a minimum of comment to a wide range of reasonably accessible specialist studies. No knowledge of Greek is assumed. A select bibliography and index is included.