Still other parallels show that Thucydides' judgment of the Spartans, of the Athenian demagogues, of Nicias, and of Alcibiades were not peculiar to himself. In these cases he has evidently tested and adopted a widespread belief.One parallel, slender evidence as it was, appeared to suggest that Thucydides felt some impropriety in attributing to Spartans the manner of speaking which, as Euripides shows, was common at Athens. On the other hand, evidence was adduced to support the reliability, in form and content, of the Melian Dialogue.