Le retour des ténèbres

Reviews for this book consistently highlight its ingenious and fascinating central premise: a planet perpetually bathed in light, whose inhabitants face the terrifying unknown of total darkness and the appearance of stars. This concept is lauded for its deep philosophical and psychological exploration, delving into themes of human perception, societal reactions to the unknown, and the timeless clash between scientific understanding and religious belief. The novel's core "Nightfall" section, which incorporates Isaac Asimov's classic short story, is frequently praised as powerful, riveting, and an unforgettable experience, with its compelling build-up of tension and believable scientific underpinnings. Many consider the original story a masterpiece of science fiction.

Despite the strong premise, many reviewers found the novelized expansion by Robert Silverberg to be a mixed bag. A common criticism is that the book feels bloated and unnecessarily long, diluting the succinct power of Asimov's original short story. The added "Twilight" and "Daybreak" sections, while containing some interesting moments, often suffer from pacing issues, with parts described as meandering or too slow. Some reviewers also pointed out inconsistencies in the internal logic regarding the inhabitants' extreme vulnerability to darkness within a technologically advanced society. Character development is occasionally noted as secondary to the plot, and the novel's ending, particularly in the "Daybreak" section, is frequently described as anticlimactic or overly bleak, failing to fully capitalize on the initial high-stakes premise.

Overall, the book receives a balanced reception, with its strengths lying firmly in its captivating core idea rather than its execution as a full-length novel. It is highly recommended for readers who appreciate classic, high-concept science fiction that prioritizes an intriguing premise and philosophical questions over deep character studies or constant action. Fans of speculative fiction interested in how a society might react to an unprecedented cosmic event, and those curious to see an expanded version of a renowned short story, would likely find value in this book, provided they manage their expectations for the novel's extended sections.