I would like to make a naive confession. There are two aspects of the professor's behavior that I've never clearly understood. First, why does Dawkins waste his time taking part in an alleged "debate" with a religious guy who's so stupid that he would dare to place atheists in the category of monsters such as Stalin and Hitler? A guy who's so ignorant at the level of contemporary knowledge that he imagines that people like Dawkins think that Homo sapiens descends from Neanderthals? My second question is closely associated with the first one. What rare quality prevents Dawkins from ever exploding in anger when confronted with the ineptitude of a guy as dumb as Pell? How come that the professor can remain so calm and polite, and retain even a few fleeting smiles?
I suspect that Dawkins senses the existence of some kind of underlying long-term vocation or mission that gets him through all these constant challenges of dealing with ignorant numbskulls. I guess it's something akin to the talents, that in other walks of life, enable certain gifted individuals to operate ceaselessly as physicians, psychologists, judges, etc. In fact, it's an admirable expression of humanism and an outlook that might be described as intellectual democracy: the belief that every individual you meet up with has the right to be listened to, no matter how silly he or she might be. Dawkins seems to exhibit quite naturally a splendid kind of Christian charity... which is weird, to say the least.
Speaking solely for myself, I've never possessed this rare talent... but that's neither here nor there.