<D>He who relies on the situation uses his men in fighting as one rolls logs or stones. Now the nature of logs and stones is that on stable ground they are static; on unstable ground, they move. If square, they stop; if round, they roll. Thus the energy developed by good fighting men is as the momentum of a round stone rolled down a mountain thousands of feet in height.<p>Sun Tzu<r>- The Art of War -</D>