This chapter explores the relation between mind and matter, spirit and nature, in Schelling’s and Hegel’s Naturphilosophie, framed through and against J. H. Green’s concept of ‘physiogony’ and Coleridge’s complication of this idea. Physiogony escalates Schelling’s hypothesis of the Stufenfolge, or graduated stages of nature, in the First Outline, into an aspirational discipline, and aptly describes Hegel’s desire in the Philosophy of Nature to trace an a priori logic of nature wherein each stage (following Kant) is cause and effect of itself, resolving the contradictions of the previous stage. However, a newly dynamical sense of matter renders this logic impossible and makes this impossibility generative. For Both Hegel’s text (despite itself) and Schelling’s radically experimental First Outline (more deliberately) break open the idealist binding of the volatile, organismic forces of nature, and disclose a dynamic interfolding of mind and matter, in which nature, rather than following the dictates of mind, generates new forms of thought.