There are people who believe that some teachings of the religion contradict the intellect, as a result, they don’t believe in this part of the religion or they don't believe some compulsory deeds and duties of the religion. We should address such people that a sound intellect will have no contradiction with the religion, whatever intellect orders the religion accepts and vice a versa. But the intellect is not taken advantage of appropriately or is influenced by carnal desires and devilish inspirations, it will miss its power of discernment. If one's eye is sound and there is no curtain in front of it, it sees the reality and truths around it. But if its functionality is disrupted or a curtain is placed in front of it, it this case, the eye exists but with no vision or sight. The mankind's brain is alike; the curtain of carnal desires and the dust of sins deactivate the brain and intellect and hinder comprehension of the truth.
source : erfan.ir