History of the Peloponnesian War

Against a power of this kind it will not do to have merely a weak naval armament, but we shall want also a large land army to sail with us, if we are to do anything worthy of our ambition, and are not to be shut out from the country by a numerous cavalry; especially if the cities should take alarm and combine, and we should be left without friends (except the Egestaeans) to furnish us with horse to defend ourselves with.