A stupid person should keep silent. But if he knew this, he would not be a stupid person.

A stupid person should keep silent. But if he knew this, he would not be a stupid person.

愚蠢的人应该保持沉默。但如果他知道这一点，他就不会是一个愚蠢的人。

-- Saadi Shirazi 萨迪·西拉兹