Full Idea
The standard Aristotelian doctrine of species and genus in the theory of anything whatever involves specifying what the thing is in terms of something more general.
Gist of Idea
Aristotle's standard analysis of species and genus involves specifying things in terms of something more general
Source
report of Aristotle (works [c.330 BCE]) by José A. Benardete - Metaphysics: the logical approach Ch.10
Book Reference
Benardete,José A.: 'Metaphysics: The Logical Approach' [OUP 1989], p.62