Peace is one of the categories that mankind has been considering since the beginning of creation, and has always been wishing to be in a calm condition and reconciliation; However, in the different ages, human being has suffered because of the lack of peace. Today, with regard to the complexities of human life and the disruptions in political and social interactions, nations are increasingly aware of the importance of peace and coexistence. The importance of this item can be found in the works of scholars, philosophers, and sociologists; as they have considered it in designing Utopia. Accordingly, it is possible to explain peace in different ways, due to cultural, religious, and social beliefs and ideas. The International Center for Developing Peace, Culture, and Rationality in order to promote peaceful coexistence, will hold the Third International Peace Studies Conference at Saturday, February 26, 2022, and intends to gather together scholars and researchers for having a better explanation of peace and reconciliation.