Your mind must become one, do not try to understand with your ears but with your heart. Indeed, not with your heart but with your soul.
ZhuangziAn archer competing for a clay vessel shoots effortlessly, his or her skill and concentration unimpeded. If the prize is changed to a brass ornament, the hands begin to shake. If it is changed to gold, he or she squints as if going blind. The abilities do not deteriorate, but belief in them does, as he or she allows the supposed value of an external reward to cloud the vision.
Zhuangzi