||Many metaphysicians have argued that there exist facts, or states of affairs, such as the fact that Bertie is a beagle. Such facts are not linguistic entities, like sentences or propositions, but rather substantial parts of concrete reality. On some views, the fact that Bertie is a beagle involves Bertie himself and the property of being a beagle. Facts have played a prominent role in metaphysical theories, including in Russell's and Wittgenstein's logical atomism. According to many metaphysicians, facts play a crucial role in grounding truths. It is the existence of the fact that Bertie is adorable that makes the corresponding sentence or proposition true. Neither Bertie on his own nor Bertie plus property is a sufficient truthmaker, since Bertie might not have been adorable.