In the tradition of the New York Times bestselling Longitude comes a popular history that reveals the little known story of what happened when two of the world's most brilliant minds met. Italy, the year 1502. Leonardo da Vinci, engineer and possible spy in the court of Cesare Borgia, crosses paths with Niccol Machiavelli, at that time Florentine ambassador. The two men formed a friendship, and joined together in an attempt to carry out one of Leonardo's most fantastic dreams: to build a system of canals that would make the Arno river navigable from Florence to the sea. While the primary reason for the project was military, da Vinci and Machiavelli also had commerce in mind. They envisioned a day when explorers would be able to sail from the city center to the sea and back, bringing riches from the New World for the greater glory of Florence. In Fortune Is a River Roger Masters provides concise and insightful biographies of two of history's greatest geniuses, an interpretation of their roles in history, and a window into their culture. It is a first-rate popular history and a fascinating introduction to the wonders of the Italian Renaissance. "Historically electrifying...Fascinating... A very interesting book" --The New York Times "A discovery...Mr. Masters skillfully navigates the intricacies of Renaissance politics, capturing the turbulence and intrigue of the age...and indulges our imaginations in the bargain." --The Wall Street Journal "A remarkable window on the birth of the modern age...meticulous...surprising." --Publishers Weekly