Order or disorder depends on organisation and direction; courage or cowardice on circumstances; strength or weakness on tactical dispositions.

Pretend to be weak, so your enemy may grow arrogant.

You cannot know if you will be successful or not. You can only prepare for battle and it must be done with all of your heart and with all of your consciousness. In that manner, you will have an edge.

Sweat more during peace: bleed less during war

You can ensure the success of your attacks if you only attack places that are undefended. You can ensure the safety of your defense if you only hold positions that cannot be attacked. Therefore, that general is skillful in attack whose opponent does not know what to defend; and he is skillful in defense whose opponent does not know what to attack.

Secret operations are essential in war; upon them the army relies to make its every move.

To know your Enemy, you must become your Enemy.