The work of L. P. Karsavin "Giordano Bruno" is not just a historical, philosophical and biographical sketch about one of the largest thinkers of the Italian Renaissance. In this small book, published in Berlin in 1923, two fundamental tasks for the researcher are set and solved - the exposure and removal of stereotypical ideas established in the ordinary (even in the ordinary philosophical) consciousness, "myths" about Bruno and the diagnosis of the hidden causes of the general cultural crisis, which inevitably accompanies, according to the author, the European civilization of the New Age. Analyzing the depressing features of the modern era of "progress" and the total alienation of man, Karsavin starts from the internal contradictions of Bruno's personality and philosophy, which in the eyes of the author becomes a figure that most clearly expresses all the greatness and the entire tragedy of the Renaissance. For philosophers and historians.