Two different questions must be asked about an appendix. First, does the second clause function as a relatively independent, proverb-like principle, or does the prior context determine its intended scope? Second, does it reinforce the explicit wording or an implication?
These are not the same division. Whether the appended clause resembles a proverb is conceptually distinct from identifying the level of meaning it confirms. A rigorous analysis therefore separately examines semantic autonomy, the object of reinforcement, and the discourse context.