Wittgenstein's view of the Certainty of Skepticising and the Empirical Basis of Knowledge

Wittgenstein's criticism on the skepticism is discussed,indicating that skepticising is a special form of cognition,and it has the empirical certainty as all the other cognitions.In other words,certainty is the natural part of doubt;and admitting of no doubt is the foundation of doubting.Wittgenstein analyzed the psychological(mental)origin of the skepticism,showing that it resulted from the philosophers' metaphysical imagination of the certainty of knowledge,however,according to him,even mathematics and logic were not higher in certainty than ordinary knowledge.Wittgensten's wordempiricalis proposed not to be understood in the dualist frame of subject and object.Certainty is indeed a faith,it is therefore subjective, but it is also a kind of life form.Wittgensten opened a new way for knowledge which was beyond the traditional subject-object frame from the view of relativity between the life form and the language game.