Can Marcus du Sautoy do for maths what Brian Cox did for physics? Can he convince us of the beauty of numbers and help us fall in love with pi? It’s a tall order, but not only does Professor du Sautoy have an unstoppable passion for ratios, he’s also a natural communicator, which clearly helps if you’re the Simonyi Professor for the Public Understanding for Science, which he is. And so du Sautoy guided us through some basic mathematical principles which underpin the workings of the universe. He introduced us to The Code.