...as he puts heretical Catholic, Piers Morgan, to shame.
An atheist can be a truth seeker and this man obviously is one. He respects the internal consistency of Catholic orthodoxy. His logic is impeccable. If we believe that the Holy Spirit speaks through the Church, then Catholics (Take note, Piers!) MUST accept what is defined as doctrine. To do otherwise is, as Jillette points out, the position of Martin Luther. So be consistent, Piers. Either stop dissenting and be a real Catholic or go join a Protestant sect. ECUSA (Episcopal Church USA) would fit you nicely and it's strongly linked to the Brits' collapsing Anglican Church.
Pray for Penn Jillette! His defense of the Church in the video deserves our thanks!