Logicians view logic as the measure for truth of thought. Theologians have taken such different views on the claim that has caused a deep opposition among a strong Sunni sect like Ash`rites. The theologians, therefore, have differed when speaking of logic. As explained in the paper, Ash`arite theologians have viewed on logic during three periods: before the fifth of Hijrah, they oppose logic largely. Ghazzali`s works have considerably upgraded the place of logic. After him, however, Ash`arite theologians formed three groups: many of them including Fakhr al-Din Razi, Shams al-Din Mohamad Samarqandi, Taftazani and Sharif Gorgani have agreed it. And some of them opposed it and viewed those studying it as doing unlawful action. The third group including those as Taq al-Din Sobki tried to harmonize the two opposite views
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