'It is not a narrative. It is a mathematical technique so advanced that only two people in the world understand it,' the Doctor said. 'When published, it will bring about enormous changes in not only mathematics, but all forms of natural philosophy and engineering. People will use it to build machines that fly through the air like birds, and that travel to other planets, and its very power and brilliance will sweep old, tottering, worn-out systems of thought into the dustbin.'