The discussion of the value of knowledge started from the time man discovered the existence of errors in some of his thoughts and observed some epistemological contradictions among thinkers. However, the issue of the value of knowledge is one of the most basic dicussions in epistemology which divides the people of the truth and knowledge into different groups after passing over the border lines of sophism and acknowledging the principle of reality.One of the problems of the value of knowledge is the criterion for knowledge or defining the concepts of right and wrong, which has been discussed in the first chapter.
