By taking a shape, by having a visible plan, you open yourself to attack. Instead of taking a form for your enemy to grasp, keep yourself adaptable and on the move. Accept the fact that nothing is certain and no law is fixed. The best way to protect yourself is to be as fluid and formless as water; never bet on stability or lasting order. Everything changes.

In martial arts, it is important that strategy be unfathomable, that form be concealed, and that movements be unexpected, so that preparedness against them be impossible. What enables a good general to win without fail is always having unfathomable wisdom and a modus operandi that leaves no tracks. Only the formless cannot be affected. Sages hide in unfathomability, so their feelings cannot be observed; they operate in formlessness, so their lines cannot be crossed.