《论衡·卷十八·自然篇》
天道原本是无为的，听任放纵万物的本性，所以把鱼类放在河里，把兽类放在山中，顺从它们性命的需要。
天道无为，听恣其性，故放鱼於川，纵兽於山，从其性命之欲也。
The nature of the Way of Heaven is originally non-action, indulging the nature of everything, so it leaves the fish in the river, placing animals in the mountains, compliant with their own nature and fate.