 In Leibniz’s view, the absolutely intrinsic properties underlying real things are at least connected to primitive force (see the entry  Leibniz’s philosophy of physics).  Primitive force (which can appear to us phenomenally as physical force) generates a progression from one representation to the next in a series, in conformity with a law (Leibniz 1698 [1969: 504; 1989: 162–63]; Adams 1994: 352; Jorati 2018). On one interpretation, primitive forces are the fundamental elements, “the sole inhabitants of the ground floor” of Leibniz’s ontology (Jorati 2018); thus, the most basic substances, mind-like monads, “do not have forces, strictly speaking—they are forces” (Jorati 2018; cf. Adams 1994: 265, 378–79). On that reading, primitive forces are the absolutely intrinsic properties underlying real things. They might be called Leibnizian quiddities.