孙二虎先生提出知识载体分三类,即:人脑载体、寓隐知识载体、专门化知识载体。他认为只有专门化知识载体才是文献,同时,对国家标准局制定的“文献:是记录知识的一切载体”的定义提出疑议。笔者非常赞同孙先生对知识载体的认识,但对他修正的文献定义有不同看法。第一,文献与其它知识所不同的是使用符号或声像记录知识;第二,载体与文献之间没有属种关系,知识性是文献的本质属性,文献从属于知识。因而知识应该是文献的属,给文献下定义应该使用知识作为属概念。所以,将定义 Mr. Sun Erhu put forward three types of knowledge carrier, namely: human brain carrier, cover hidden knowledge carrier, specialized knowledge carrier. He believes that only the specialized knowledge carrier is the literature, at the same time, the definition of “the document: all the carriers of the record knowledge” formulated by the National Bureau of Standards is raised. I very much agree with Mr. Sun’s knowledge of the carrier of knowledge, but his revised definition of the literature have different views. First, the difference between the literature and other knowledge is the use of symbols or images to record knowledge. Second, there is no relationship between the object and the literature. Knowledge is the essential attribute of the literature, and the literature is subordinate to knowledge. Therefore, knowledge should be the genus of the literature, to the definition of the literature should use knowledge as a concept. So, will be defined