 Gregory’s views on minima naturalia also attracted attention. Although Gregory acknowledges that there is a minimal extensive quantity some subject needs to have in order to receive a given form (Sylla 2011, 403), he rejects the idea that forms of a given species would have intensive minima, relying on ideas developed by Richard Kilvington (Knuuttila 1971, 313; Loewe 2014, 320–323).