《淮南子·俶真训》
像这样的话，就会将天下及天下之事看得轻如羽毛、浮泛芥草，谁还肯忙忙碌碌将外物当回事！
若然者，视天下之间，犹飞羽浮芥也，孰肯分分然以物为事也？
In this way, the world and the affairs of the world will be regarded as light as feathers and floating duckweed. Who is still willing to be busy and take external things seriously!