Theopompos and Athenian lies
At the end of book X of thePhilippikaTheopompos gave a digression on die Athenian demagogues. In book XXV he gave a digression on Athenian lies. This, which may have been a shorter digression, specified two lies and questioned the accepted account of the battle of Marathon; perhaps Theopompos discussed these problems alone in full and contented himself with a general reference to other lies. One lie was the oath allegedly taken by the Greeks before the battle of Plataea; today many people believe, with Theopompos, that this oath was not authentic. The other lie was the peace of Callias. Today some people believe, against Theopompos, that the peace was authentic. It is not always easy to discover their reasons. Some of them claim to produce nebulous allusions to the peace from the text of Thucydides. This search in Thucydides for references to the peace is not likely to carry conviction; it simply draws attention to the silence of Thucydides about the peace in his account of the Pentecontaetia. In fact the positive evidence for the peace is flimsy, but there is one good reason for believing in the peace; that is the fact that no major fighting is recorded between Persia and the Delian League after 450. Whether this outweighs the reasons against authenticity is a question for judgement.