《宋史·列传·卷一百五十三》
听了我的话的人不是表示忿怒就是沉默寡言，也有人反过来问我，我立即对他说：今日之病，名叫风虚，它的症状为半身不遂。
闻臣之言者不忿则默，间有反以诘臣，即对之曰：今日之病，名为风虚，其状半身不随是也。
Those who listened to me were either outraged or taciturn, and some asked me in return, and I immediately said to him: Today's disease is called "Wind Deficiency", and its symptom is hemiplegia.