Next Wednesday I'll pursue a favorite past time: introducing a class of University of Cincinnati undergraduates to the ambiguities of journalism ethics. We'll talk about virtues and vices, standards and seducers. Our first session probably will include the threatened burning of the Qur'an by a Florida pastor. And in October I'll teach a similar class for UC's Osher Lifelong Learning Institute. It's freewheeling — no text, exams or grades.