A goat butts against a hedge And gets its horns entangled. Making a boast of power leads to entanglements, just as a goat entangles its horns when it butts against a hedge.
Wilhelm establishes the hedge as the archetypal image of natural limit against which undisciplined force entangles and defeats itself, while the superior person recognizes this boundary in advance and withdraws.
, The I Ching or Book of Changes, 1950thesis