Foreknowledge cannot be gotten from ghosts and spirits, cannot be had by analogy, cannot be found out by calculation. It must be obtained from people, people who know the conditions of the enemy.

“Traitez bien les prisonniers, nourissez-les comme vos propres soldats, afin qu'…”

“The general who advances without coveting fame and retreats without fearing dis…”

“Attack is the secret of defense; defense is the planning of an attack.”

“The whole secret lies in confusing the enemy, so that he cannot fathom our real…”