An author is a psychiatrist with long-term experience, invites a reader to join him in search of psychical norm. Basic psychical diseases, frontier states, are described in a book, a great number over of prime examples is brought from life.A reader will get possibility поразмышлять about own individual features and that can be considered a norm and as far as this concept is relative.A book is written in common language, with by a humour and самоиронией, illustrated by a remarkable artist С. Пшизовым. All of it does reading interesting and enthralling, in spite of seriousness of the discussed problems.3th publ. (эл.).