The theme of the First Philippic was preparedness. In response, Demosthenes delivered the "Second Philippic", a vehement attack against Philip. Within the same year, Demosthenes delivered the "Third Philippic". A short time later Demosthenes delivered one of his most famous speeches, the Third Philippic. So does Roger L'Estrange in his violent philippic, "'The Holy Cheat"'. A Fourth Philippic is also extant, but is of disputed authorship. A First, Second, and Third Philippic have been ascribed to Demosthenes. Another surviving work for the period is Justin's epitome of Pompeius Trogus's "Philippic History". Cicero's Second Philippic is styled after Demosthenes' "De Corona" ('On the Crown').