Robert P. George, professor of jurisprudence at Princeton University, is considered by some to be the �most influential conservative Christian thinker� in America. In recent years he has advanced sophisticated arguments against abortion, embryonic stem-cell research and gay marriage. The key to Robert George�s appeal is his unique brand of Natural Law ethics. He doesn�t appeal to faith, scripture or Church doctrine to advance his arguments. He invokes �no authority beyond the authority of reason itself.� For this episode the doubtcasters examine George�s complicated (and frankly bizarre) argument against gay marriage.