Here, we get deeper into the assignment. This isn't just any page, but a page that's supposed to come out of "you," or, the student. This means that whatever the page is, it's supposed to reflect something deep about who the writer is. The topic seems to be wide open, though. Whether it's their sentiments about scrambled eggs or the state of modern society, if it comes from the inside, it's fair game for this assignment.
Line 5, then, goes a little further to say that, if the page comes out of the person writing it, it will be "true." The professor is inviting the students to see the connection between their writing, their selves, and some ultimate truth. Hmm. We wonder where that will take our speaker.