此“疑古”、“信古”之“古” ,主要指北宋庆历以前传统古典学而言的。传统　　古典学至宋代而始疑 ,至近代而大疑 ,形成“疑古”思潮。 2 0世纪初王国维提出“二重证据法”以对传世文献作重新判断 ,是一次重要的古典学重建活动。而李学勤先生提出“走出疑古时代” ,则标志着它已经成为时代的主旋律。但是 ,“走出疑古时代” ,并不意味着走向“释古”。冯友兰先生对其“释古”的解释 ,前后有很大的不同 ,而最终倒向了“疑古”。中国古典学的正确发展方向 ,应该是从“疑古”走向“正古”。“正古”即“修正”传统古典学。它一方面肯定传统古典学基本上可靠 ,只需“修正” ;另一方面承认传统古典学也有缺陷 ,所以需要“修正”。具体言之 ,它大致可以归结为“四正” ,即“反正”、“纠正”、“补正”和“判正”。 This “ancient”, “ancient” letter “ancient”, mainly refers to the Northern Song Dynasty before the Qing Dynasty traditional classical terms. From the classical classical studies to the Song dynasty, they became suspicious, to modern times they were in great suspicion, forming the trend of “suspicion of ancient times”. At the beginning of the 20th century, Wang Guowei proposed the “Dual Evidence Law” to re-judge the handed down documents. It is an important reconstruction activity of classical studies. Mr. Li Xueqin’s proposal of “stepping out of doubt times” indicates that it has become the main theme of the times. However, “going out of doubt times” does not mean going to “liberation.” Feng Youlan’s interpretation of his interpretation of the ancient past, there are very different before and after, and eventually turned to the “suspect.” The correct direction of development of Chinese classical learning should be from “doubtful” to “ancient”. “True ancient” means “revision” of classical classical studies. On the one hand, it affirmed that traditional classical studies are basically reliable and need only to be “revised”; on the other hand, they admit that traditional classical studies also have flaws and therefore need to be “revised.” Specifically speaking, it can be roughly attributed to “four positive”, that is, “anyway,” “correct”, “correction” and “judgment.”