The Criterion Problem from Chisholm's Standpoint

This article is translation and critique of a work by Roderick M. Chisholm on epistemology. The author raised the question of what criterion we have in acquiring knowledge and then with a rather historical approach examined possible answers to the question and finally tried to give an answer to skepticism. Small as it is, the book has a proper statement of the problem in question which added to its original value. In addition to Persian translation, some critical points are provided by translator