The Suhravardi's Innovations on the Critrion of the Need of an Effect to a Cause

Ibn Sina considers the possibility of the quiddity as the criterion of the need of an effect to a cause, but Mulla Sadra criticizing this kind of possibility, insists on another kind of possibility- called poorly possibility – as a criterion. We will discuss in this paper first the Suhravardi’s view in this relation. We will show that Suhravardi frequently in his works considers essential poverty as the criterion of the need of the lights to their causes. From his point of view, the essences or the lights are nothing but the radiance or the Light of the lights. This has two consequences: 1- All the existent beings are nothing but relations to God; 2- All the acts in the world are nothing but God’s acts.