Book excerpt: * Our summary is short, simple and pragmatic. It allows you to have the essential ideas of a big book in less than 30 minutes. By reading this summary, you will learn how your behavior is determined by your feelings. You will also learn : that sensation is the brain's primary means of interpreting reality; what impact sensations have on your judgment; how to quickly recognize the main cognitive biases induced by this functioning; that even your thoughts or abstract ideas such as beauty or morals are the result of a generalization of sensory concepts; how to improve your life by consciously and voluntarily using your main sensory modalities. Human beings seem to think and behave in a totally free and mostly rational way. However, research in cognitive psychology proves that this is only an appearance or even an illusion. Indeed, the real motor of behavior, but also of perception and even of thoughts, would actually be much simpler and more basic: it would be sensations. These crystallize mainly in childhood and are largely common to all human beings. Knowing how they work allows not only to better understand and control one's own behavior, but also to better perceive and anticipate that of others. It's time to update your own instructions! *Buy now the summary of this book for the modest price of a cup of coffee!