What is the linguistic status of utterances like "The more, the merrier"?
In English it would not be considered a sentence because there is no verb. Yet, it fully stands on its own meaningfully. But it is not a phaticism, or fixed idiom.
Sure, the corresponding phrases in other European languages have similar non-verb structure "je X, desto Y" (Ge), "plus que X, plus que Y".
Also, sure, there are languages that routinely allow non-verb sentences like Inuit (or rather, verbal attributes can be added to nouns)/
Are there other non-verb stand alone quasi-sentences in English? In other mostly strict NP-VP languages?