I'm struggling with distinguishing between the subject and predicate which is causing me problems. I understand the concrete rules of thumb about "only = predicate" or "the only = subject" but in the cases that do not have “only” it is too easy to get the S&P crossed. I have three other rules I've tried to apply to separate between the two: Example: Aristotle is left-handed. 1) In A-claims the class restricted is the subject: Aristotle (subject) is restricted because he is left-hand. Left-handed people (subject) is restricted because of Aristolte. Too easy to turn it around either way...doesn't help 2) Predicate- to assert or affirm something about the subject: Assert that Aristotle is left-handed. Assert that left-handed is what Aristotle is....Doesn't help! 3) Predicate- something that is affirmed or denied about something else: It is affirmed that Aristotle is left-handed (subject). It is affirmed that a left-handed person is Aristotle (subject)...doesn't help. Any ideas what I'm doing wrong or rules to help?