摘要:The theme of the paper, one of constant topicality, has become all more current to day because of the mutations that have taken in the human societies, generally terms, in moral field and specifically in the realms of law. The break with the past that we are experiencing is one of “post-duty” after the latest lecture of the post-moderns. After this, duties and obligations cease being ethical and respectively juridical tools of the human co-existence. Our attempt in the current paper is argue about the following: non-identity between duty and obligation and their fundamental nature in the unfolding of human life on Earth, in spite of there constant shifting.