The book you are holding in your hands now is unusual not only in its title, but also in its content and presentation of material. What is this unusualness? There are no scientific words and terms in it, but there are many different visual examples, interesting scientific and historical facts, wise quotes, real, instructive and funny stories, funny anecdotes and witty jokes. This book is for those who are dissatisfied with themselves and their lives. For those who would like to become wiser and wittier, understand people better and find a common language with everyone, celebrate success more often and be upset less often. A book for those who would like to fill their lives with joy and meaning. The book is also published under the title “An Instructive Book. How to become smarter"