Macrocosmos and Action

By distinguishing the perceptual world from an 'in-itself', Kant prompts some of his successors to conceive the latter as a mysterious realm penetrable only by some supernatural mode of cognition.  But, ordinary experience offers a better guide to the nature of what lies beyond perception.  For, the most intimate of objects of perception is one's own body, and it is plain that one's own body is a representation of oneself qua motile agent.  Thus, Kant's description of the in-itself as a world of 'freedom', and Schopenhauer's, as 'volitional', accurately formulate what can be easily inferred from ordinary experience.  Likewise, a macrocosmos of experience is primarily an arena of action that encompasses an agent, a world that is represented in a corresponding microcosmos that includes the objectified body of the agent.