 But what exactly is a property instance? If the concrete individual Socrates instantiates the abstract universal property wisdom, then two further putative items come into consideration. One is the (Chisholmian-Plantingian as opposed to Bergmannian-Armstrongian) state of affairs, Socrates’ being wise. Such items are abstract, i.e., not in space or time. The other is the property instance, the wisdom of Socrates. Mann rightly holds that they are distinct. All abstract states of affairs exist, but only some of them obtain or are actual. By contrast, all property instances are actual: they cannot exist without being actual. The wisdom of Socrates is a particular, an unrepeatable item, just as Socrates is, and the wisdom of Socrates is concrete (in space and/or time) just as Socrates is. If we admit property instances into our ontology, then the above two difficulties can be circumvented. Or so Mann maintains.