No important national language, at least in the Occidental world, has complete regularity of grammatical structure, nor is there a single logical category which is adequately and consistently handled in terms of linguistic symbolism.
Edward SapirWe see and hear and otherwise experience very largely as we do because the language habits of our community predispose certain choices of interpretation.
Edward SapirIt is quite an illusion to imagine that one adjusts to reality essentially without the use of language and that language is merely an incidental means of solving specific problems of communication or reflection.
Edward SapirA second type of direct evidence is formed by statements, whether as formal legends or personal information, regarding the age or relative sequence of events in tribal history made by the natives themselves.
Edward Sapir