《淮南子·诠言训》
持守本分，遵循事理，失去了不忧虑，得到了不兴奋。
守其分，循其理，失之不忧，得之不喜，故成者非所为也，得者非所求也。
Cleave to your own nature and act in accordance with the Way, Not being worried when you lose something or excited when you get something.