Under the command of Napoleon Bonaparte and the French Army, a small and little-known corps of Paris's brightest intellectual lights left the safety of their laboratories, studios, and classrooms to embark on a thirty-day crossing into the unknown—some never to see French shores again. Over 150 astronomers, mathematicians, naturalists, physicists, doctors, chemists, engineers, botanists, artists—even a poet and a musicologist—accompanied Napoleon's troops into Egypt. Carrying pencils instead of swords, specimen jars instead of field guns, these highly accomplished men participated in the first large-scale interaction between Europeans and Muslims of the modern era. And many lived to tell the tale.