This will be rendered still more evident from what I have now to say, particularly from certain passages in the history of Ephorus. This writer in his history of war seems to me to have had some idea of naval tactics, but to be quite unacquainted with fighting on shore. Accordingly, if one turns one’s attention to the naval battles at Cyprus and Cnidus, in which the generals of the king were engaged against Evagoras of Salamis[41] and then against the Lacedaemonians, one will be struck with admiration of the historian, and will learn many useful lessons as to what to do in similar circumstances. But when he tells the story of the battle of Leuctra between the Thebans and Lacedaemonians, or again that of Mantinea between the same combatants, in which Epaminondas lost his life, if in these one examines attentively and in detail the arrangements and evolutions in the line of battle, the historian will appear quite ridiculous, and betray his entire ignorance and want of personal experience of such matters. The battle of Leuctra indeed was simple, and confined to one division of the forces engaged, and therefore does not make the writer’s lack of knowledge so very glaring: but that of Mantinea was complicated and technical, and is accordingly unintelligible and indeed completely inconceivable, to the historian. This will be rendered clear by first laying down a correct plan of the ground, and then measuring the extent of the movements as described by him. The same is the case with Theopompus, and above all with Timaeus, the subject of this book. These latter writers also can conceal their ignorance, so long as they deal with generalities; but directly they attempt minute and detailed description, they show that they are no better than Ephorus.... (_g_) It is in fact as impossible to write well on the operations in a war, if a man has had no experience of actual service, as it is to write well on politics without having been engaged in political transactions and vicissitudes. And when history is written by the book-learned, without technical knowledge, and without clearness of detail, the work loses all its value. For if you take from history its element of practical instruction, what is left of it has nothing to attract and nothing to teach. Again, in the topography of cities and localities, when such men attempt to go into details, being entirely without personal knowledge, they must in a similar manner necessarily pass over many points of importance; while they waste words on many that are not worth the trouble. And this is what his failure to make personal inspection brings upon Timaeus.... [Sidenote: Timaeus’s want of practical knowledge.]