Le Maître de la Lumière

"Le Maître de la Lumière" 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. However, as often happens in science fiction, this discovery leads to unintended consequences and raises ethical and societal questions.
"Le Maître de la Lumière" explores themes of scientific advancement, the consequences of unchecked technological progress, and the moral dilemmas that arise from harnessing the power of light.