Finding Fibonacci is Devlin's compelling quest to tell the story of the medieval mathematician Leonardo of Pisa, more popularly known as Fibonacci. Although he is most famous for the Fibonacci numbers (which he did not invent), Fibonacci's greatest contribution was as an expositor of mathematical ideas at a level ordinary people could understand. In 1202, Liber Abbaci ("The Book of Calculation") introduced the western world to modern arithmetic. Yet Fibonacci was long forgotten after his death, and it was not until the 1960s that his achievements were finally recognized. Devlin describes his quest's highs and lows, false starts and disappointments, tragedies and unexpected turns, hilarious episodes, and occasional lucky breaks, bringing together the threads of Fibonacci's astonishing (and previously vanishing) part in the revival of science, technology and commerce.