Petr responded by pointing to the following:
Video Clip #1
Video Clip #2
Video Clip #3
Mason C. also wrote in and pointed to this piece at the EPPC:
The Question of Marriage
A Lecture by Hadley Arkes
In this lecture, Professor Hadley Arkes explained how the most serious challenge in principle to the traditional laws governing marriage in fact reveals the deeper flaws in the argument for same-sex marriage.
AUDIO RECORDING OF THIS EVENT
Hadley Arkes (full bio here) is an EPPC Senior Fellow, and the Edward Ney Professor American Institutions at Amherst College. His most recent book is Natural Rights and the Right to Choose (Cambridge University Press, 2002).