[…] some apparent universals [d] seem to belong to the category ‘properties of mediating systems’ and therefore are innate only in the sense that man uniquely has the mental capacity for symbolization and for relating symbols systematically.
- Le Page (1977), a pag.234

It may be a type [d] universal of linguistic structures that they can be represented as being at some point on a continuum: at one extreme, concrete and directly referential, context-bound, idiosyncratic, and with a personal semantic deep structure; at the other, abstract, context-free, common, and a with a syntactic deep structure exhibiting logical properties.
- Le Page (1977), a pag.236