The harder we try to catch hold of the moment, to seize a pleasant sensation..., the more elusive it becomes... It is like trying to clutch water in one's hands - the harder one grips, the faster it slips through one's fingers.
I don't like standing near the edge of a platform when an express train is passing through. I like to stand right back and if possible get a pillar between me and the train. I don't like to stand by the side of a ship and look down into the water. A second's action would end everything. A few drops of desperation.
She fell into a deep pool of sticky water, which eventually closed over her head. She saw nothing and heard nothing but a faint booming sound, which was the sound of the sea rolling over her head. While all her tormentors thought that she was dead, she was not dead, but curled up at the bottom of the sea.
So a military force has no constant formation, water has no constant shape: the ability to gain victory by changing and adapting according to the opponent is called genius.