Full Idea
Every bodily substance must have a soul, or at least an entelechy which is analogous to the soul.
Clarification
An 'entelechy' is an actual essence
Gist of Idea
Every bodily substance must have a soul, or something analogous to a soul
Source
Gottfried Leibniz (Letters to Antoine Arnauld [1686], 1687.10.09)
Book Reference
Leibniz,Gottfried: 'The Leibniz-Arnauld Correspondence', ed/tr. Mason,HT/Parkinson,GHR [Manchester UP 1967], p.154
A Reaction
He routinely commits to a 'soul', and then pulls back and says it may only be an 'analogy'. He had deep doubts about his whole scheme, which emerged in the late correspondence with Des Bosses. This not monads, says Garber.