 A second topic arises if we consider the ontology of space and time independently from the substance-property metaphysical framework, e.g. by considering the relationship of space and time to physical objects. Following Newton’s discussion in the first (1687) edition of the Scholium following the Definitions in the Principia, the modern debate concerning space’s ontology has been centered on two overarching conceptions: absolutism (now sometimes called “substantivalism,” although that label raises certain issues), the view that space and time exist independently of all possible objects and object relations, or perhaps the view that space-time points exist; and relationalism, the view that space and time depend for their existence on possible objects and relations, or perhaps the view that space-time points do not exist (DiSalle 2006; Messina 2018).