Karl Ferdinand Schertz is at home a no well known author. On the contrary, his name is known around the world thanks to his work Magia posthuma, which was quoted by Augustin Calmet. Because of his not well available biography and books, Schertz is unfortunately wrong understood and around him circulate various rumors or negative critics. Karl Ferdinand Schertz was on the contrary highly cultured author, who could enjoy a good reputation among the european intellectuals of his time.