These children can't concentrate, act capriciously, and fail to accept anything they are taught not because they have been spared the rod, and not because they haven't been raised properly. Rather, "there are some slight defects in their brains."
孩子之所以注意力不集中、行為衝動，屢教不聽，不是打得不夠，也不是教養不好，而是「腦部有些微的瑕疵」。