In Islamic culture, rationality and the implementation of the secondary meanings for rationality and wisdom have a unique interpretation in Islam that is not comparable to other religions and cultures. Rationalism has such a high status in Islamic jurisprudence that Islamic rationalism is complete. Islam considers moral education as the leading foundation for a complete education. Therefore, rational education is parallel to moral education. Moral education is the guidance and education of the human psyche through the rational side. In rational education, the heart of man is the center of rationalism. The heart of every human is educated through the verses of the Qur'an and the hadiths of the Imams. Therefore, the social structure of an Islamic society is endowed with an infinite moral aspect that stabilizes man's situation in society and clarifies his relationship with society - the demands and conditions of the new situation guide the individual and society to grow. According to Nahj-Al-Balaghah, optional behavior is attributed to a human being. A wise person is expected to improve and develop the compelling aspects of rationalism and guard against inhibiting factors of rationalism. Therefore, the wise person can appropriately benefit from the achievements of forward-looking action and begin a life of happiness and pride. In many narrations of Imam Ali (A.S.) about the qualities of wisdom and the forward-looking wise man, wisdom is the most vital source to recognize truth and falsehood and perform good deeds. This paper examines the role of rationalism and thoughtfulness in educating the moral society through the hadiths of Imam Ali (A.S.).