At the end of the Q&A period after Tyson and Dawkins' magnificent presentation "The Poetry of Science", this douchebag troll (who refused to sit and insisted on getting his "question" out) tries to bait Dawkins/Tyson into a religious discussion with the mildly retarded question about what they would do when they're about to die with nothing to console themselves but their knowledge of science (implying that they're incomplete without the source of origin:god). Dawkins passed the opportunity for retort to Tyson, who answers in a fantastically poetic way.
“That which can be asserted without evidence, can be dismissed without evidence.” Christopher Hitchens