I think you should write a paragraph about the person and his or her opinion as a "body" paragraph.
Then, write a paragraph comparing that opinion to your own view, as a person with your own background.
After that, figure out what meaningful truth about language you have discovered. Write about that in another body paragraph.
After you have written 3 body paragraphs, you finally have something to introduce! See, it is hard to introduce something that does not exist yet.
So, in answer to your question, I think you should hook the reader's interest like the others advised, but you have to do it by writing something about this special truth that is uncovered by your essay. You have to write the material of the essay before you can do a good job of introducing it.
I always do my introductions last, after writing the essay.
Kevin, EssayForum.com