If Mitt Runs, The Terrorists Win
No, seriously. That was his actual excuse for quitting: "If I fight on in my campaign, all the way to the convention, I would forestall the launch of a national campaign and make it more likely that Senator Clinton or Obama would win. And in this time of war, I simply cannot let my campaign, be a part of aiding a surrender to terror."
I'll prefer to remember the Mitt this way: