History of the Peloponnesian War

Meanwhile those who believe me need not be dismayed at the force or daring of the enemy. They will not be able to do us more hurt than we shall do them; nor is the greatness of their armament altogether without advantage to us. Indeed, the greater it is the better, with regard to the rest of the Siceliots, whom dismay will make more ready to join us; and if we defeat or drive them away, disappointed of the objects of their ambition (for I do not fear for a moment that they will get what they want), it will be a most glorious exploit for us, and in my judgment by no means an unlikely one.

Few indeed have been the large armaments, either Hellenic or barbarian, that have gone far from home and been successful. They cannot be more numerous than the people of the country and their neighbours, all of whom fear leagues together; and if they miscarry for want of supplies in a foreign land, to those against whom their plans were laid none the less they leave renown, although they may themselves have been the main cause of their own discomfort.

Thus these very Athenians rose by the defeat of the Mede, in a great measure due to accidental causes, from the mere fact that Athens had been the object of his attack; and this may very well be the case with us also.