《论衡·卷六·福虚篇》
这样天神不能保护眼睛不瞎的人，那么也就不能用使人失明的办法来保护人了。
此神不能护不盲之人，则亦不能以盲护人矣。
If this is the case then the gods are unable to protect people whose eyes are not blind, then it is not possible to use the method of blinding someone to protect people.