 In precise terms, Wolff believes the world is an extended whole that is composed of a finite number of interacting physical bodies. To better understand the types of cosmological claims that Wolff defends about the universe, it is perhaps helpful to consider first his conception of physical bodies. Ultimately, the conclusions that Wolff draws at the macroscopic level about the world-whole are simply extrapolated from his analysis of physical bodies. After considering Wolff’s analysis of body, this section will conclude with an overview of Wolff’s view of space, time and material extension.