چكيده لاتين :
Although history is an ancient knowledge, the question of its efficacy or inefficacy has occupied the minds of many people in past and present. Even though Islamic historians have written very few chapters on this subject in their books or have very few independent books in this field, some of them have discussed this subject in the introduction of their historical writingsThe present article has extracted and analyzed views of about ten outstanding Islamic historians about helpfulness of history. The most important benefits of historical studies, according to these historians, are: having as a sample and gaining experience from deeds of the past people, achieving the habit of patience, an increase in the faculty of wisdom, removal of despair, being confident to the Divine mercy, isolation from the mortal world, becoming hopeful to the immortal world, having a hobby and etc. Key words: efficacy, Islamic historians.