That we should never hazard our whole fortunes where we put not forth our entire strength; for which reason to guard a defile is often hurtful.
It was never judged a prudent course to peril your whole fortunes where you put not forth your whole strength; as may happen in more ways than one. One of these ways was that taken by Tullus and Metius, when each staked the existence of his country and the credit of his army on the valour and good fortune of three only of his soldiers, that being an utterly insignificant fraction of the force at his disposal. For neither of these kings reflected that all the labours of their predecessors in framing such institutions for their states, as might, with the aid of the citizens themselves, maintain them long in freedom, were rendered futile, when the power to ruin all was left in the hands of so small a number. No rasher step, therefore, could have been taken, than was taken by these kings.
A like risk is almost always incurred by those who, on the approach of an enemy, resolve to defend some place of strength, or to guard the defiles by which their country is entered. For unless room be found in this place of strength for almost all your army, the attempt to hold it will almost always prove hurtful. If you can find room, it will be right to defend your strong places; but if these be difficult of access, and you cannot there keep your entire force together, the effort to defend is mischievous. I come to this conclusion from observing the example of those who, although their territories be enclosed by mountains and precipices, have not, on being attacked by powerful enemies, attempted to fight on the