Carefully study the well-being of your men, and do not overtax them. Concentrate your energy and hoard your strength. Keep your army continually on the move, and devise unfathomable plans.
The best general is the one who never fights.
Concentrate your energy and hoard your strength.
Generally in war the best policy is to take a state intact; to ruin it is inferior to this.
When your opponent gives you an opening, be swift as a hare.
When the thunderclap comes, there is no time to cover the ears.