In our everyday life we mention perhaps only two of the mathematicians that ever lived: Pythagoras in association with his famous theorem, and Fibonacci in association with his famous numbers. The Fibonacci numbers have many fascinating mathematical properties and can be found in the world, surrounding us, in the art and sciences.

In this small book we have tried to compile everything known today about Fibonacci, using as primary sources only the original works. Extracts from Fibonacci's works are provided in the original language as well as in the translation.

It is our hope that this book will be useful to those just starting to get acquainted with Fibonacci, as well as to those, who already know quite a bit about him.