Linguistic experience, both as expressed in standardized, written form and as tested in daily usage, indicates [...] that there is not, as a rule, the slightest difficulty in bringing the word to consciousness as a psychological reality.
- Sapir (1921), Pag. 33

Subject and 'predicate' may be combined in a single word, as in Latin 'dico'; each may be expressed independently, as in the English equivalent, 'I say' [...]
- Sapir (1921), Pag. 35

[...] the idea of 'hide' may be also expressed by the word 'conceal,' the notion of 'three times' also by 'thrice.' The multiple expression of a single concept is universally felt as a source of linguistic strength and variety, not as a needless extravagance.
- Sapir (1921), Pag. 37

[...] every language has an inner phonetic system of definite pattern. [...] it has also a definite feeling for patterning on the level of grammatical formation. Both of these [...] impulses to definite form operate as such, regardless of the need for expressing particular concepts [...]
- Sapir (1921), Pag. 61

However [...] in its ultimate origins the process of composition may go back to typical sequences of words in the sentence, it is now, for the most part, a specialized method of expressing relations.
- Sapir (1921), Pag. 65

In probably the majority of languages that use both types of affixes each group has both delimiting and formal or relational functions. The most that we can say is that a language tends to express similar functions in either the one or the other manner.
- Sapir (1921), Pag. 69