natural law

Avicenna has aimed to establisha harmonized philosophical system that incorporates logic, epistemology, metaphysics, natural philosophy, and other types of knowledge. Although he has not directly written anything about the metaphysical foundations of science, we believe that there are some implications in his philosophy that could be considered astruthmakers of scientific propositions. As natural law is significantly correlated to “experiment”, we will first discuss the epistemological aspect of experiments in Avicennian philosophy. He believes that the observation of a repeated event could lead us to a causal relationship due to the fact that accidental events are neither permanent nor frequent. Following that, the logical approach which corresponds to this epistemology will be introduced. As Avicenna’s logic does not directly consider such an approach, we are to derive it from apparently disconnected chapters and then formulate them. It will be indicated that Avicenna has been aware of the differences between propositions that merely refer to existent instances and ones that consider the nature of instances. The latter obviously could refer to both existent instances and hypothetical instances. Finally, we present some points in his metaphysics that could establisha metaphysical basis for propositions concerning natural law. In addition, we will indicate that Avicenna’s system is able to justify the counterfactual conditionals that relate to laws of nature.

Universality of common human values embedded in declarations and international treaties supposed to be evident in the international human rights legal system but it does not mean that there were no intellectual discrepancies behind those instruments. Universality of human rights has its roots more than anything on theories of Jhon locke's natural law and Immanuel kant's rational ethics . But one of the earliest philosophers of opposition side against unity of human nature and universal morality at the embryonic stage was Nietzsche . Bringing forth the theory of will to power by adopting a psychological genealogy method Nietzsche distinguished between two moralities: Masters Morality and Slaves Morality . He attributed human rights as slave morality. Slaves revolted with the spirit of resentment and womanish deception against masters then introduced their own qualities as standard and universal . The Rise of Christianity and the Great French Revolution are amongst two biggest examples of such slave revolt in morality. With such a presupposition, trying by any effort to reconcile human rights morals with Nietzschean views seems to be unachievable. While reviewing past philosophical challenges, this article tries to analyze necessity of co-existence both international human rights legal system and Nietzschean world from a new perspective.