ABSTRACT
The holy fool Isidor Tverdislov lived in Rostov the Great in the 15th century. Isidore of Rostov was the first Russian saint to be canonically accepted as a Fool-for-Christ. The young Moscow historian Sergei Gorodilin provides convincing evidence that the saint was a holy fool in Rostov before the middle of the 15th century, probably in the first half of the century, and a stable tradition about him was already formed in the same period. St. Augustine was the main author of the Christian West, who wrote about the award awaiting the holy citizens of Heavenly Jerusalem. On November 14, 1933, Ernst Kantorowicz, a German Jewish historian and medievalist, gave an inaugural lecture at the Goethe University in Frankfurt am Main.
