"If you know the enemy and know yourself,
you need not fear the result of a hundred battles.
If you know yourself but not the enemy,
for every victory gained you will also suffer a defeat.
If you know neither the enemy nor yourself,
you will succumb in every battle."
(c.500-320 B.C.) name used by the unknown Chinese authors of the sophisticated treatise on philosophy, logistics, espionage, strategy and tactics known as 'The Art of War'
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