We all have limitations—our energies and skills will take us only so far. Danger comes from trying to surpass our limits. Seduced by some glittering prize into overextending ourselves, we end up exhausted and vulnerable. You must know your limits and pick your battles carefully. Consider the hidden costs of a war: time lost, political goodwill squandered, an embittered enemy bent on revenge. Sometimes it is better to wait, to undermine your enemies covertly rather than hitting them straight on. If battle cannot be avoided, get them to fight on your terms. Aim at their weaknesses; make the war
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