[...] Eskimo, Nootka, and Yana [...] have hundreds of suffixed elements, many of them of a concreteness of significance that would demand expression in the vast majority of languages by means of radical elements.
- Sapir (1921), a pag.67

When a word (or unified group of words) contains a derivational element (or word) the concrete significance of the radical element ('farm-', 'duck-') tends to fade from consciousness and to yield to a new concreteness ('farmer', 'duckling') that is synthetic in expression rather than in thought.
- Sapir (1921), a pag.84

In a synthetic language [...] the concepts cluster more thickly, the words are more richly chambered, but there is a tendency [...] to keep the range of concrete significance in the single word down to a moderate compass.
- Sapir (1921), a pag.128

[...] languages in which the syntactic relations are expressed in necessary connection with concepts that are not utterly devoid of concrete significance but that do not [...] modify [...] their radical elements by [...] affixes or internal changes [...] are the 'Mixed-relational non-deriving languages' [...]
- Sapir (1921), a pag.137