This book is written in Russian. It is a commonplace to speak of Belyi as an 'insane' and 'hectic' genius. The present study takes a different approach to Belyi featuring him as a poet-philosopher who is highly conscious of the philosophical background of his poetry and placing Belyi's thought into the context of European philosophy of the first third of the twentieth century. Moreover, it takes as its point of departure the understanding that in many aspects Belyi was similar to his philosophical idols, Vladimir Solovyov and Friedrich Nietzsche. The book offers a number of substantial modifications of the traditional view of Belyi's role in Russian Symbolism.