Sun Tzu · Politics
Sun Tzu’s most quoted maxim makes knowledge the foundation of all victory: the commander who knows both the enemy and himself need never fear defeat - and foreknowledge, gathered through spies and calculation, is the strategist’s supreme weapon.
Of all the lines in The Art of War, none is more quoted than this: ‘If you know the enemy and know yourself, you need not fear the result of a hundred battles.’ In a single sentence Sun Tzu makes knowledge the foundation of all military success - more fundamental than courage, numbers, or weapons. The maxim has three parts, each a different degree of knowledge and a different fate. Know both the enemy and yourself, and a hundred battles hold no danger. Know yourself but not the enemy, and your chances are even - one victory for every defeat. Know neither the enemy nor yourself, and you are doomed to lose every time. The whole of strategy, Sun Tzu suggests, rests on this: that victory flows from clear sight, from an accurate knowledge of the real strengths and weaknesses of both sides, and that defeat flows from the illusions, the blind spots, and the wishful thinking that distort that knowledge. The commander’s first task is not to be brave but to see truly.
If knowledge is the foundation of victory, how is it obtained? Sun Tzu’s answer is unsentimental: by spies. He devotes his entire final chapter to espionage, and makes a startling claim - that the money spent on intelligence, however great, is trivial compared to the cost of war, and that to begrudge it is the height of folly. An army may be in the field for years, at vast expense in treasure and lives, and the whole campaign may turn on a single day’s battle; to remain ignorant of the enemy’s condition for want of spending on spies, he says, is ‘the height of inhumanity,’ a betrayal of the soldiers whose lives that ignorance will cost. Foreknowledge - the accurate knowledge of the enemy’s dispositions, plans, and weaknesses, obtained in advance - is what makes all of Sun Tzu’s strategy possible: the calculations, the deceptions, the striking where the enemy is weak. And this foreknowledge, he insists, cannot be had from omens, divination, or guesswork; it can only be obtained from men - from spies who know the enemy’s actual situation. The general who masters the use of spies holds the enemy’s fate in his hands.
To grasp why Sun Tzu places such overwhelming weight on knowledge, one must understand the condition he is fighting against: the radical uncertainty of war. War is the realm of confusion, rumour, and the unknown - what the Western theorist Clausewitz would later call the ‘fog of war.’ In battle, a commander rarely knows the true position of the enemy, the real state of his own scattered forces, what is happening beyond the next hill, or what the enemy intends. He acts on fragmentary, distorted, often false information, and the side that sees through this fog more clearly than the other holds an immense, often decisive advantage. Sun Tzu’s entire emphasis on calculation, on spies, on knowing the enemy and oneself, is a sustained campaign against the fog - an attempt to replace the guesswork and illusion that doom most commanders with genuine, hard-won knowledge of the real situation.
This reframes what military genius actually is. We tend to imagine the great general as a figure of inspired daring, seizing the moment with bold intuition. Sun Tzu’s general is something different and, in a way, more impressive: a figure of penetrating clarity, who has done the patient, unglamorous work of gathering information and reckoning honestly until he sees the whole situation as it truly is, and who then acts not on a gamble but on a near-certainty. The daring of the ignorant commander is, for Sun Tzu, mostly recklessness - the throwing of dice in the dark. The true master appears bold only because he has made himself so well-informed that what looks to others like a risky stroke is, to him, a sure thing. He strikes where the enemy is weak because he knows where the enemy is weak; he avoids battle when he would lose because he knows he would lose. His apparent genius is, at bottom, superior knowledge - the fruit of having seen clearly where others saw only fog. This is perhaps Sun Tzu’s deepest demystification of war: that the difference between the victor and the vanquished is, more often than courage or even strength, the difference between sight and blindness.
This is the opening of the lesson. The rest — the dialogue, the primary source, and the recall — is in the app.
You learned Sun Tzu’s maxim that one must know both the enemy and oneself. Explain in your own words why knowing yourself is as essential as knowing the enemy.
Leads to Chanakya (Kautilya).
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