History of the Peloponnesian War

Again, some of the most powerful states have never yet accepted the arrangement at all. Some of these are at open war with us; others (as the Lacedaemonians do not yet move) are restrained by truces renewed every ten days,

and it is only too probable that if they found our power divided, as we are hurrying to divide it, they would attack us vigorously with the Siceliots, whose alliance they would have in the past valued as they would that of few others.

A man ought, therefore, to consider these points, and not to think of running risks with a country placed so critically, or of grasping at another empire before we have secured the one we have already; for in fact the Thracian Chalcidians have been all these years in revolt from us without being yet subdued, and others on the continents yield us but a doubtful obedience. Meanwhile the Egestaeans, our allies, have been wronged, and we run to help them, while the rebels who have so long wronged us still wait for punishment.

And yet the latter, if brought under, might be kept under; while the Sicilians, even if conquered, are too far off and too numerous to be ruled without difficulty. Now it is folly to go against men who could not be kept under even if conquered, while failure would leave us in a very different position from that which we occupied before the enterprise.

The Siceliots, again, to take them as they are at present, in the event of a Syracusan conquest (the favourite bugbear of the Egestaeans), would to my thinking be even less dangerous to us than before.