Wolfgang Schauble, German finance minister, implored the British people to vote yes to Europe in this year's referendum. "It would be a disaster otherwise," he said.
Mr Schauble has warned in the past that if the EU is unable to stop one of its more prosperous members from walking out in frustration, hard-headed investors in Asia, the US, and around the world, will take it as evidence that the EU is in terminal decline.
What an incentive to vote to leave.