The Position of Nothing in Knowledge of Metaphysic

The first philosophy or metaphysics is the most fundamental knowledge. All knowledge need it not only in their longitudinal series but also its concepts are introduced to them and it has made them internally dependent on itself. The main concepts of metaphysics are three: existence, nothing and quiddity. It is not possible to conceive or acknowledge any topics of metaphysics without the presence of these three concepts. Philosophies have usually focused more on existence and quiddity, ignoring nothingness. Hence, nothingness and its discussions are subordinate in philosophical books. In this article, I show the contribution of nothingness to the order of metaphysics and its discussions. After showing the position of recognizing nothingness in issues of epistemology, theology and cosmology, a plan for a metaphysics of nothingness is proposed that completes the metaphysic of existence and quiddity. The result of this research is the need to recognize nothingness and its properties in metaphysics and consequently in other knowledges.