Consider the concept of a MAN. It comes with a rich mental image, characterizing overall shape. But the mental image also comes with a schematic structure. [...] In general, rich mental images are structured by image-schemas, but they are not exhaustively structured by them. The mental image is more than just the sum of the schemas. Since the mental image is part of what makes MAN a basic-level concept, the basic-level concept must contain schemas. If both basic-level concepts and image schemas are primitives, then we have the situation where one primitives contains other primitives.
- Lakoff (1987), a pag.280