明代思想家吕坤《呻吟语》中云:“心要如天平,称物时物忙而衡不忙,物去时即悬空在此。只恁静虚中,正何等自在!”意思是说:一个人的心要像天平一样,称量物体时,物体上下动荡而衡杆不会随之摇摆不定,物体去掉时就空悬在那里。在那样的清静虚空中, The Ming dynasty thinker Lü Kun “groaning language” in the cloud: "Heart like a balance, said the thing is busy and balance is not busy, when things go vacant here. Said: a person’s heart like a balance, the same weighing objects, the object up and down the turbulence and the balance will not swing along the bar, when the object is empty hanging there. In that quiet void,