Full Idea
Leibniz's form contains both sensation and appetite, and he seems to associate appetite with the ability a body has to act on another.
Gist of Idea
Forms have sensation and appetite, the latter being the ability to act on other bodies
Source
report of Gottfried Leibniz (works [1690]) by Daniel Garber - Leibniz:Body,Substance,Monad 3
Book Reference
Garber,Daniel: 'Leibniz: Body, Substance, Monad' [OUP 2009], p.122
A Reaction
It strikes me (you may be surprised to hear) that this concept is not unlike Nietzsche's all-mastering 'will to power'. I offer Idea 7140 in evidence.
Related Idea
Idea 7140 Chemical 'laws' are merely the establishment of power relations between weaker and stronger [Nietzsche]