Based on a classic definition, knowledge is "true justified belief". Though this definition is faced with many criticisms, there is a relative consensus about it. Being one of constituents of this definition, justification [when used in a moral context] means the justification of ethics. It is however sometimes used in the sense of criterion of truth for moral statements. This article uses 'justification' in its later sense, trying to explain the truth of moral statements on the basis of Allama Tabatabaei's theory of considered concepts. According to the author, only the realist moral schools of thought are capable of justifying moral statements. Albeit Allama deals with moral statements as considerations, he believes that these considerations (contracts) are based on realities having real consequences. He likewise says that some of the considerations are stable not undergoing any change. Thus he is a moral realist and that is why based on his theory of considerations moral statements are justifiable.
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