A 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 SapirOne of the glories of English simplicity is the possibility of using the same word as noun and verb.
Edward SapirA firm, for instance, that does business in many countries of the world is driven to spend an enormous amount of time, labour, and money in providing for translation services.
Edward SapirAs a matter of fact, a national language which spreads beyond its own confines very quickly loses much of its original richness of content and is in no better case than a constructed language.
Edward Sapir