We are all prey to something. If not lions, tigers and bears, then other's intentions; and of course our own bad habits, weaknesses, mental projections. There is use in this realisation: it keeps us on our toes, keeps the spirit ready, but to be complete we also need the opposite realisation: that the world is basically benign, and that everything will work out in the end if we just relax and stop being so paranoid. Together these present a workable system, that is, a method for becoming strong. Separately they will always end in failure.