English mind is insularity; the virtue of its boisterous energy is accompanied by lack of insight into the differing virtues of other peoples. If the natural course of events led to the exclusive use of English for international communication, this defect would be still more accentuated. The immense value of becoming acquainted with a foreign language is that we are thereby led into a new world of tradition and thought and feeling. Before we know a new language truly, we have to realize that the words which at first seem equivalent to words in our own language often have a totally different atmosphere, a different rank or dignity from that which they occupy in our own language. It is in learning this difference in the moral connotation of a language and its expression in literature that we reap the real benefit of knowing a foreign tongue. There is no other way—not even residence in a foreign land if we are ignorant of the language—to take us out of the customary circle of our own traditions. It imparts a mental flexibility and emotional sympathy which no other discipline can yield. To ordain that all non-English-speaking peoples should learn English in addition to their mother tongue, and to render it practically unnecessary for English-speakers (except the small class of students) to learn any other language, would be to confer an immense boon on the first group of peoples, doubling their mental and emotional capacity; it is to render the second group hidebound.
When we take a broad and impartial survey of the question we thus see that there is reason to believe that, while English is an admirable literary language (this is the ground that its eulogists always take), and sufficiently concise for commercial purposes, it is by no means an adequate international tongue, especially for purposes of oral speech, and, moreover, its exclusive use for this purpose would be a misfortune for the nations already using it, since they would be deprived of that mental flexibility and emotional sympathy which no discipline can give so well as knowledge of a living foreign tongue.