Trust is one of the fundamental and less-attended issues in social and political studies and it constitutes the basis of the society and social relations. Discussing the sources of trust and its importance in various spheres, this research focuses on social order. With respect to the sources, the article identifies two types of social or sociological sources on the one hand and intellectual, philosophical or doctrinal sources on the other. Two discussions of economic performance and social equality are included in the heading of the first source, and certain moral outlooks, beliefs and values are counted under the heading of intellectual sources. There are three kinds of social order and corresponding types of trust, the establishment of order that corresponds to the habit based on the habitus and it acts through custom, fame and memory; regulating order that is based on emotions and affection acting according to family relations, friends and the community; and auxiliary order that is founded upon trust as based on policy, conscious compliance with the rules and commandments and perception of their usefulness, and it acts according to cohesion, tolerance and legitimacy. These kinds of order act alongside each other and are related with the other elements of the society. Therefore, change in any of the aforementioned elements may affect the subject and issue of trust as well. Furthermore, trust has a mutual relationship with the other elements of the society and influences them as it is affected by the others. Therefore, the appearance of a problem in one of these aspects may be followed by a circle of declined trust. This is a point that should be considered in the formation of social and political developments.
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