Samuel Taylor Coleridge (1772–1834) wrote copious marginalia in his copy of the English translation of the works of the early modern German mystical philosopher Jacob Böhme (1575–1624). This chapter outlines the development of Coleridge’s reading of Böhme, which took place over a long period. It then shows that Coleridge did not treat Böhme purely as a theologian or visionary, but critically grasped and appropriated the scientific thought of the ‘teutonic theosopher’ using the language of contemporary Naturphilosophen, above all Henrik Steffens. Thus, deploying the natural-philosophical paradigm of polarity in his interpretation of Böhme’s account of the generation of light in nature, Coleridge significantly imports the modern term ‘gravitation’. The chapter concludes by examining the prominent place of Böhme’s ‘spiritual chemistry’ in Coleridge’s later thought. The ambivalence with which Coleridge continued to view the supposed struggle of the German thinker with pantheism is also addressed.