How do we learn about the secrets of the past, hidden in the symbolism of ancient mystical orders or in the mysteriously ideal proportions of the Egyptian pyramids? How do we understand the meaning encrypted, for example, in painting by great artists? What helps us unravel the messages left by ancient civilizations? Once, in distant times, only the Chosen were dedicated to the secret meaning of symbols. Currently, everyone can discover their mysterious essence. For this, a real book was created, which describes the oldest symbols with the most capacious content, reveals some topics that have not been covered so far, such as the symbols of science and martial arts, as well as a number of modern symbol signs. The theory of the development of signs and symbols is set out in close relationship with history, religion, psychology, art, etc. and is accompanied by brief, but accessible to any reader explanations and reference information. Numerous illustrations play an important place in understanding the significance of certain symbols.