《论衡·卷六·雷虚篇》
如果认为击断树木是天发怒，不击断树木是天欢喜，那么隆隆的雷声就不应该是同一种声音。
如用击折者为怒，不击折者为喜，则夫隆隆之声，不宜同音。
If we were to say that breaking trees is a sign of Heaven's anger and not breaking trees is a sign of Heaven's pleasure, then the rumbling of thunder should not be the same sound.