“In his laboratory, located in a hidden forest castle of the rulers of the Ostrian land, the margraves of the Eastern appanages of Bavaria and Styria - the Babenbergs, west of the city of Bamberg, an ancient monk rubbed his eyes in the morning, squinting at the rising sun. It was so ancient and old that, like an old boulder near the castle, it was overgrown with moss of rumors and tales written about it in the surrounding villages by idle storytellers. Even in the count's castle, minstrels and vagantes sang wondrous songs about him. The monk was called Bertold Schwartz, or in Slovenian Black Bear, for the denseness of his residence in his tower, like in a den, and for the eternal black dress he wore in the world...”