In the early 1690s Roger North was preparing to remove from London to Rougham, Norfolk, where he planned to continue his search for truth, which for him meant knowledge of nature, including human nature. This was interrupted by his reading of Newton?s books on mechanics and optics; his correspondence with Norfolk clergyman Samuel Clarke; and his reading and response to Clarke?s publication on the philosophy of the Godhead. Kassler details the challenges that these events presented, and includes editions of North?s notes on Newton?s books, as well as what now remains of the 1706 and later correspondence with Clarke.