《论衡·卷十八·自然篇》
滋润农作物的大雨，功业名声是很大的，而天却不有意下雨，阴阳之气和顺而大雨就自然降落下来了。
沛然之雨，功名大矣，而天地不为也，气和而雨自集。
The heavy rain that nourishes the crops is mighty in effect and reputation, yet the heaven does not intentionally make it rain; when the yin and yang energies merge, the heavy rain falls naturally.