“It seems to me that the human brain is like a small empty attic, which you can furnish as you like,” the famous detective of all times Sherlock Holmes once said. “A fool will drag in there all the junk he can get his hands on... But a smart person... will only take the tools that he needs for his work, but there will be a lot of them.” The proposed book is a tool that, without a doubt, sooner or later an intelligent and intelligent person will need. In this reference book you will find information about the Universe and planet Earth, the origin and development of life on Earth, the history of the development of human civilization (including history, culture, religion, sports, science, technology, etc.), information about the countries of the world and much more.