In this book, the author uses the Diary as a starting point for exploring the cyclical development of the “when you are only fifteen” generation through the prism of time and from the height of the 21st century. Based on documents and materials available to the author, covering seven decades (1954–2023), it is shown that three generations of “discovery” can not only communicate, but also understand each other according to the principle of “looking in the same direction.”