History of the Peloponnesian War

The Athenians are the very people of all others to do this, as they aspire to rule the rest of the world, and are more in the habit of invading and ravaging their neighbors' territory, than of seeing their own treated in the like fashion.

Considering, therefore, the power of the state against which we are marching, and the greatness of the reputation which, according to the event, we shall win or lose for our ancestors and ourselves, remember as you follow where you may be led to regard discipline and vigilance as of the first importance, and to obey with alacrity the orders transmitted to you; as nothing contributes so much to the credit and safety of an army as the union of large bodies by a single discipline.’

With this brief speech dismissing the assembly, Archidamus first sent off Melesippus, son of Diacritus, a Spartan, to Athens, in case she should be more inclined to submit on seeing the Peloponnesians actually on the march.