1. Sun Tzu said: The art of war is of vital importance to
the State.
2. It is a matter of life and death, a road either to
safety or to ruin. Hence it is a subject of inquiry which can on
no account be neglected.
3. The art of war, then, is governed by five constant
factors, to be taken into account in one's deliberations, when
seeking to determine the conditions obtaining in the field.
4. These are: (1) The Moral Law; (2) Heaven; (3) Earth;
(4) The Commander; (5) Method and discipline.