Passage 13-1
孫子曰: 凡興師十萬, 出征千里, 百姓之費, 公家之奉, 日費千金. 內外騷動, 怠於道路, 不得操事者, 七十萬家.
Sun Tzu said: Raising an army of one hundred thousand and campaigning a thousand li costs the people and the state a thousand gold pieces daily. The nation is disrupted internally and externally; seven hundred thousand households cannot attend to their work, exhausted by transport duties.
The economics of espionage: raising armies costs thousands of gold per day, but foreknowledge costs a fraction. Intelligence is the most efficient investment in strategy.
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