How To Teach A Foreign Language by Otto Jespersen

When, in accordance with a wish expressed by English and American friends, I determined to have my Sprogundervisning translated into English, I found it difficult to decide what to retain and what to leave out of the original. So much of what I had written appeared to me to apply more or less exclusively to Danish schools and Danish methods, and I had too little personal experience of the practice of English teachers or of English school-books to be quite sure of the advisability in each case of including or excluding this or that remark. -Preface