Sun Zi – The Art of War

Chinese strategy explained : know yourself and the ennemy, use deception, spies, and "win with ease". Tr. Giles (en, annotated) and Amiot (fr).

Introduction
I. Laying Plans
II. Waging War
III. Attack by Stratagem
IV. Tactical Dispositions

V. Energy
VI. Weak Points and Strong
VII. Maneuvering
VIII. Variation in Tactics
IX. The Army On The March

X. Terrain
XI. The Nine Situations
XII. The Attack By Fire
XIII. The Use of Spies

Energy

Sunzi V. 7.

The onset of troops is like the rush of a torrent which will even roll stones along in its course.

The quality of decision is like the well-timed swoop of a falcon which enables it to strike and destroy its victim.1

1. The Chinese here is tricky and a certain key word in the context it is used defies the best efforts of the translator. Tu Mu defines this word as "the measurement or estimation of distance." But this meaning does not quite fit the illustrative simile in ss. 15. Applying this definition to the falcon, it seems to me to denote that instinct of SELF RESTRAINT which keeps the bird from swooping on its quarry until the right moment, together with the power of judging when the right moment has arrived. The analogous quality in soldiers is the highly important one of being able to reserve their fire until the very instant at which it will be most effective. When the "Victory" went into action at Trafalgar at hardly more than drifting pace, she was for several minutes exposed to a storm of shot and shell before replying with a single gun. Nelson coolly waited until he was within close range, when the broadside he brought to bear worked fearful havoc on the enemy's nearest ships.

Giles V.12,13.

C'est par son élan que l'eau des torrents se heurte contre les rochers ; c'est sur la mesure de la distance que se règle le faucon pour briser le corps de sa proie. Ceux-là possèdent véritablement l'art de bien gouverner les troupes, qui ont su et qui savent rendre leur puissance formidable, qui ont acquis une autorité sans borne, qui ne se laissent abattre par aucun événement, quelque fâcheux qu'il puisse être ; qui ne font rien avec précipitation ; qui se conduisent, lors même qu'ils sont surpris, avec le sang-froid qu'ils ont ordinairement dans les actions méditées et dans les cas prévus longtemps auparavant, et qui agissent toujours dans tout ce qu'ils font avec cette promptitude qui n'est guère que le fruit de l'habileté, jointe à une longue expérience.

Amiot

Sun Zi V. 7.