The book, in a clear and logical language familiar to men, describes and explains the nature of women, the peculiarities of their behavior, the nature of female logic, female mystery, and describes the principles of relationships with men, children and society. After a man reads the book, a woman will no longer be incomprehensible to him. The book is intended for a wide range of men, from the president to a teenager in the period of hypersexuality, who want to understand women and not suffer failures in their personal and business lives, and to effectively manage their wife, team or state. The book is also interesting for women who want to better understand themselves, men and intergender relationships.