What sort of public speech is appropriate for a republic at war? At any time, public speech in a republic should be clear, simple, rational, and focused on the public interest. In the heat of war, the speaker must be not merely moral, but cunning; he should employ a rhetoric that is restrained and unemotional, realistic and hard-headed, yet also decent and principled. The study of Thucydides, particularly of his so-called Mytilenian Debate, underlines this lesson.