This brochure (based on the author's introductory article to the book "Symmetry" G. Weyl) talks about one of the most remarkable mathematicians of the 20th century. Proposed , that it would later be continued by other books in the Mathematics series, Cybernetics" , Acquainting the reader with outstanding scientists , the collective creativity of which contributed to the development of a set of ideas and methods , and ,. what can be called the "scientific atmosphere" or the "scientific worldview" of today The author of the book in his student years, t. e. years , when the acuity of perception of the new is the highest, Read the book , Time, matter" , "Group Theory and Quantum Mechanics" and "The Idea of a Riemannian Surface" , which will be discussed later in CM. and the impression of these kyaig , connecting depth of thought with high perfection of literary form, It is still in place today.. Later, the author had to edit the Russian translation of the classic “Classical Groups” by G. Veil (will it be allowed to speak here of "classic squared" groups?), as well as to read other books and articles of this outstanding scientist and brilliant scientific writer . And the author considers this brochure as a modest tribute to the great master of mathematical science from one of them. who tend to appreciate the joy of intellectual communication with Weyl , The study of his work , The value of which has not faded in 12 years , From the day of his death, he created the world............. [ The small volume of the brochure and the focus on the untrained reader forced to abandon the attempt to comprehensively cover the contribution of the G.... [ Weyl in modern mathematics - for example, here nothing is said about the works of this outstanding analyst in the field of mathematical analysis, and only in the most general words is mentioned about Weyl's research in the field of the foundations of mathematics, to which the author himself attached a very great importance........... But mathematical works are generally difficult to describe; much more can be given to their study, and the author of this brochure will be very happy if reading it will serve as an incentive to study the original books and articles of Weyl, a number of which are translated into Russian.