Document Type : Scientific-research

Abstract

Meta ethics deals with conceptual and affirmative principles of morality, Meta ethics includes the following four issues: moral semantics, moral epistemology, moral ontology and logical discussion. Logical discussion concerns deduction of moral conceptions and propositions and false moral reasoning; therefor, in the view of Mohaghegh Isfahani that hasn’t been critic up to now. The author tries to critics the view of Ayatollah Mohaghegh Isfahani in this problem.
Mohaghegh Isfahani tries to prow that moral statements are logically. He disagree with deduction relationship between statement of moral good and statement of moral ought to, but both of them have the same meaning. He argue deduction relationship between statement of immoral good and statement of moral ought to and called it Debate. He believe certainty for moral statements. It seems that in the view of Mohaghegh Isfahani don’t included all moral statement.

Keywords

• Metaethics
• moral statement
• Relation between Is and Ought