One for sorrow Two for mirth Three for a wedding And four for death Nine for hell. 666. Hidden within this cathedral are clues to a mystery, something that could help answer one of humanitys most enduring questions... The 13th-century masons who constructed this place had glimpsed a deep truth and they built a message into its very walls in the precise proportions of this magnificent cathedral. To the medieval clergy, these divine numbers were created by God. But to me, theyre evidence of something else, a hidden code that underpins the world around us, a code that has the power to unlock the laws that govern the universe. As a mathematician, Im fascinated by the numbers and patterns we see all around us... that connect everything from fish to circles and from our ancient past to the far future. INDISTINCT COMMENT Together they make up the Code...  the most detailed description of our world weve ever had. For centuries, people have seen significant numbers everywhere... its mark in the stones of this medieval cathedral.