《列子·黄帝》
那人说： 我出生在高地而安心于高地，这就叫安于本然；我成长在水边而练习于水边，这就叫习而成性；我不知道为何这样做而去做了，这就叫顺应自然天命。 
曰： 吾生于陵而安于陵，故也；长于水而安于水，性也；不知吾所以然而然，命也。 
The man said, "I was born on the hills and so I am at home on the hills. I grew up by the water and so I am at home in the water. I do not know why I do these things. I simply do them. That is all."