The phoneme has a phonic shape, but no meaning. It is pure manifestation and belongs exclusively to the expression.
- Martinet (1962), a pag.40

We have to reckon in language with a second articulation, that of the phonic aspect of every moneme into a succession of distinctive units, the phonemes. Every one of five units of our former example ['I have a headache'] is formally made up of one, two or three sounds or phonic complexes, to which, as such, no meaning is attached, but whose choice and order fully characterizes the moneme whose manifestation they are: 'head', for instance, is made up of three phonemes /h/, /e/, and /d/ in this order.
- Martinet (1962), a pag.23