Full Idea
Properties that have no concrete instances must be defined in terms of those that have.
Gist of Idea
Uninstantiated properties must be defined using the instantiated ones
Source
Anthony Quinton (The Nature of Things [1973], 9 'Nat')
Book Reference
Quinton,Anthony: 'The Nature of Things' [RKP 1973], p.264
A Reaction
I wonder what the dodo used to smell like?