《论衡·卷二十·论死篇》
人没有耳目就不会知道什么，所以聋人盲人，如同草木一样，精气离开人体，哪里只是和人没有耳目一样呢？
人无耳目则无所知，故聋盲之人，比於草木。夫精气去人，岂徒与无耳目同哉？
Without ears or eyes, people can't know anything. That's why deaf and blind people are like grass and trees. When the quintessence leaves the human body, how is it any different from the deaf and blind?