This article reproduces and summarizes the contents of the English history classes that I have lectured at Saitama University (2003-06) and Meiji University (2005-11). This time, I will post the contents of Middle English from my lecture records. Of course, this is not just a summary of all the books on the history of the English language I have read so far, but a unique article with original perspective and knowledge of European culture, literature, and history that I have acquired through my life as a university lecturer. The English used here is American English, and the level of English is for students in general liberal arts courses at the university. This is a record that I want many English learners to have, in order for them to acquire a more comprehensive understanding of the historical, linguistic, political, and cultural background of English. In addition, this will mention the future of English, as an ideal form of the global language.