Al -Akkad seeks in this book to answer two very important questions; Does religion and thought agree? Can a modern person evaluate his Islamic faith on the basis of thinking? Akkad answers yes; He cites the verses of the Qur'an calling for thinking, which greatly afflicted the mind (the means of thinking); It indicates that the Holy Qur'an does not mention the mind except by glorification, and it calls for referral to it, but rather it reaches the conclusion that: thinking and doing the mind is an Islamic duty, and how not, and it is a religion that is devoid of priesthood and mediation between the servant and his Lord?! Where the Quranic discourse is directed to the free, sane person to urge him to think about the verses of God with the universe and himself; To realize the truth of his existence.