Aristotle's Protreptic

You can find the remains of Aristotle's Protrepticus or exhortation to philosophy here (PDF), as edited by Doug Hutchinson and Monte Johnson here at the University of Toronto. This has recently had some coverage in the news media; Michael Pakuluk discusses it at "Dissoi Blogoi" here (on the edition itself) and here (on the implications of the text in pedagogy).