Three things
Some of the transitions were "so fast" I didn't have time to take in the picture with the words above. I'd suggest letting the viewer choose when to move on with a button. Philosophy, and by consequence, political theory is not meant to be shoved down the throat of the student. Let the viewer linger on the words and integrate them with the picture below.
Secondly, while it was nice overall, these are obviously just scanned pages. The looming music was a nice touch, but original artwork is much more appreciated. A few of the folks around here have taken the text from a philosophy and incorporated independent images to match ("Philosophy of Liberty" comes to mind.) Originality will definitely boost your score.
For being unoriginal art, the filesize was just too large. Even original art scans would have warranted a slightly higher score.