Reading is the fastest way to learn a foreign language, and reading formed the basis of the tools that polyglots use when learning new languages. No other tool allows a person to learn 3-4 or more new languages in a short time. It is explained by the fact that
extensive reading allows a person studying a language to interact with the most significant number of unfamiliar words, language constructions, phrases, and phrases in a unit of time, which passively fall into the reader's memory.