As soon as each utterance in any language is conceived of as a succession of minimal signs, with or without overlappings, it becames clear that grammar can be presented as the set of rules restricting the free combinations of all these signs.
- Martinet (1962), Pag. 100

In no language are all monemes used indiscriminately as function-endowed and function marking. In other words, there is no language without grammar. But once unambiguous function-marking secured, there is no universally valid reason why any moneme, except one that is specifically a function-mark, should be excluded from any function, whether predicative or non-predicative. Still, specialization is very widespread.
- Martinet (1962), Pag. 64