"Le Ma tre de la Lumi re" is a science fiction novel written by the French author Maurice Renard. Renard was a pioneer in French science fiction literature, and this novel, published in 1903, is considered one of his notable works. The story follows the protagonist, Jean Lebrun, who is an inventor. Lebrun creates a remarkable invention known as the "Etherone," a device that allows humans to control light and use it as a powerful source of energy...