《管子·形势解》
风雨是至公而无私心的，风吹雨下，没有既定方向，人们虽然遇到风吹雨打也不会发出怨言。
风雨至公而无私，所行无常乡，人虽遇漂濡而莫之怨也。
Rain and wind are just and impartial. They blow and rain without any predetermined direction. Although people may encounter wind and rain, they don't usually complain.