A standard international language should not only be simple, regular, and logical, but also rich and creative.
Edward SapirA common creation demands a common sacrifice, and perhaps not the least potent argument in favour of a constructed international language is the fact that it is equally foreign, or apparently so, to the traditions of all nationalities.
Edward SapirLanguage is an anonymous, collective and unconscious art; the result of the creativity of thousands of generations.
Edward SapirThe psychology of a language which, in one way or another, is imposed upon one because of factors beyond one's control, is very different from the psychology of a language which one accepts of one's free will.
Edward SapirIt would be naรฏve to imagine that any analysis of experience is dependent on pattern expressed in language. Any concept, whether or not it forms part of the system of grammatical categories, can be conveyed in any language. If a notion is lacking in a given series, it implies a different configuration and not a lack of expressive power.
Edward Sapir