What is this book about? It’s no secret that children grow up following the examples of adults. But hardly any of us would want our children to imitate us in everything, because we want them to be wiser, happier, and more talented than their parents! So who should we look up to? In Orthodoxy, saints are recognized as such role models. But they were the same people as us: they had some shortcomings, but they constantly struggled with them. St. Sergius of Radonezh (or rather the youth Bartholomew, because that was his name before becoming a monk) had a very difficult time getting a letter - just like to many of today's boys and girls. But Bartholomew did not despair, hoped for help and did not lose heart. And help was not long in coming! Writer, publicist, and also father of many children Alexander Tkachenko tells children about this and many other episodes of the life of St. Sergius. Written in living language, this book will be close and understandable to every child.