[...] suffixes do more of the formative work of language than all other methods combined.
- Sapir (1921), a pag.67

It will not be necessary to give many [...] examples of prefixing and suffixing. One of each category will suffice to illustrate their formative possibilities.
- Sapir (1921), a pag.70

[...] reduplication [...] in English it is not unknown, though it is not generally accounted one of the typical formative devices of our language.
- Sapir (1921), a pag.76

[...] the main processes [...] are used by all known languages to affect the fundamental concepts -those embodied in unanalyzable words or in the radical elements of words- by the modifying or formative influence of subsidiary concepts.
- Sapir (1921), a pag.82