If you read nothing else on persuasion or influence, read this definitive book and it may change your life. How many times do we ask ourselves: what is behind all these advertising and political messages? What are the threads that move the masses to buy something too expensive or to fight wars that seem illogical and cruel? The principles presented in this book are a very valuable sum of the practical and scientific knowledge that the human being uses to dominate others, through persuasion, in all aspects of life: the producer of the favorite program, the car salesman, the presidential candidate, the crying little girl, the elementary teacher, and even our mother use some of these principles without knowing it. Only a few privileged people knew them formally to dominate the will of others; now you also have the power in your hands.