The distinction between essence (ousia/māhiyyā) and existence (to einai/wujūd) has been a cornerstone of metaphysics in the West since Plotinus (d. 270 CE). Greek and Muslim philosophers were concerned with the ontological and epistemological relationship between essence and existence, their origin in an unchanging and unmoving Ultimate Being, and how this ontology relates to the process of creation. This chapter examines this along with Plotinus’s doctrine of the emanations of the principles and the role that love plays in creation. This chapter argues that Ibn Sīnā’s ontological conception of the essence-existence paradigm is generally Plotinian and that his doctrine of love helps him establish a relationship between all levels of ontological reality. The addition of the concept of love to Ibn Sīnā’s metaphysics also contains important implications with respect to his approach to the relationship between various types of being. It shows how Ibn Sīnā interpreted the metaphysical concepts of his Greek and Muslim predecessors in light of his Islamic beliefs to create an ontological and cosmological worldview that could be defended as “Islamic” by future members of his school.