If words of command are not clear and distinct, if orders are not thoroughly understood, the general is to blame. But if his orders are clear, and the soldiers nevertheless disobey, then it is the fault of their officers.
Know the enemy and know yourself.
If the enemy leaves a door open, you must rush in.
Therefore the good fighter will be terrible in his onset, and prompt in his decision.
Secret operations are essential in war; upon them the army relies to make its every move.
A warrior who is prepared to fight must also be prepared to die.