《淮南子·俶真训》
人的心志往哪里，精神也会跟着跑去；反之，如心志返回虚静的境界，精神也就随之宁静，嗜欲也就灭息。
心有所至，而神喟然在之，反之于虚，则消铄灭息，此圣人之游也。
Wherever the human heart and mind go, the spirit will follow. Conversely, if the heart and mind return to a state of emptiness and stillness, the spirit will also become calm, and desires will be extinguished.