In this article, the impact of the Qur'an on Imam Ali's thought is discussed. This impact is divided into two categories by the writer:
1. Direct impact, i.e., the presence of Qur'anic knowledge and concepts with the same revelational structure in the Imam's thought.
2. Indirect impact, i.e., the mastery on the spirit of Qur'anic knowledge. Viewpoints, insights, explanations and interpretations are rubricized as follows: the insight in evaluation; self-reflective glance at Being; acquiscent look at God; instrumental glance ot the world; admonitory glance ot history; purposive look at man; and experimental outlook toward life. In the part regarding explanation, these topics are viewed: definition and explanation of religious facts; analytical description of religious issues, and reasoning in proving religious facts. In all three parts, the writer has, by giving examples, described the deep impact of the Qur'an on lmam Ali's(a.s) thought and mind.