But the mayor of London also suggested that leaving the EU would expose the idea that most of Britain's problems are self-inflicted. "If we left the EU, we would end this sterile debate, and we would have to recognise that most of our problems are not caused by 'Bwussels', but by chronic British short-termism, inadequate management, sloth, low skills, a culture of easy gratification and underinvestment in both human and physical capital and infrastructure," Johnson wrote in his Daily Telegraph column."Why are we still, person for person, so much less productive than the Germans? That is now a question more than a century old, and the answer is nothing to do with the EU. In or out of the EU, we must have a clear vision of how we are going to be competitive in a global economy."