This chapter engages with the first Anglophone attestations of the term “subtle body.” It appears first in the contentious correspondence between Thomas Hobbes and Rene Descartes between whom there was some disagreement over who plagiarized the idea from whom. Most of the chapter is taken up with the Cambridge Platonists who came in their wake, who formulated complex philosophical and mythological views of the Neoplatonic vehicles of the soul, now under the English name “subtle body.” It ends with Lady Anne Conway, who fuses the Platonism of the Cambridge group with Kabbalah to create a new form of spiritual monism. This chapter is significantly about how the subtle body concept was employed by Renaissance Platonists arguing against the reductive materialism of Cartesian mechanical philosophy.