In 1662, a 19-year-old Isaac Newton started carrying a leather-bound journal, which he used to track finances and work out math problems. But he also used it to hide something secret. On two pages, Newton scribbled a cryptic code, a code that went unsolved for over 300 years. In 1964, historians finally solved the script. They discovered a list of sins: 57 of Newton’s wrongdoings. The journal—today called the Fitzwilliam notebook—paints the Enlightenment icon as a mood-swinging, sweet-toothed,... READ ON