Pictured below is the Empty Chair that was reserved for Dawkins to follow the eighth commandment he quoted in The God Delusion: "Never seek to censor or cut yourself off from dissent; always respect the right of others to disagree with you." Dawkins refused to show up to the Sheldonian Theatre October 25 to debate the world's leading Christian apologist, William Lane Craig.
"The Ultimate 747 Gambit is a very serious argument against the existence of God and one to which I have yet to hear a theologian give a convincing answer, despite numerous opportunities and invitations to do so," says Dawkins in the video below: