Full Idea
Basic to Aristotle's logic is the grammatical distinction between subject and predicate, which he glosses in terms of the contrast between a substance and its properties.
Gist of Idea
Aristotle's logic is based on the subject/predicate distinction, which leads him to substances and properties
Source
report of Aristotle (Prior Analytics [c.328 BCE]) by José A. Benardete - Metaphysics: the logical approach Intro
Book Reference
Benardete,José A.: 'Metaphysics: The Logical Approach' [OUP 1989], p.2
A Reaction
The introduction of quantifiers and 'logical form' can't disguise the fact that we still talk about (and with) objects and predicates, because no one can think of any other way to talk.