The book itself is simply an example to each one of us. Its style and organisation are straightforward. Barabási articulates a series of anecdotes some of which come from biographical sketches of Euler and Erdös (the two mathematicians who made graph theory what it is now or rather what it was before the intervention of Barabási and his team) and some of which are provided by his own work. What is quite admirable is the way he puts his own work into perspective with other famous contributions. This shows a great scientific culture. To put it shortly, this book is a must.