Many books and articles have been written by psychologists estimating the IQs of people like Isaac Newton and Louis XIV. These estimates may not be very exact, but a surprising amount can be learned by studying the biography of a person and noting their intellectual development. Isaac Newton, Leibnitz, and Goethe have all been estimated to have had very high IQs, ranging from 160 to 200. Napoleon and Hitler have been estimated around 130-140. King Frederick the Great and Czar Peter the Great around 150. The kings of Europe as a group would be one of the most intelligent groups...