"De Avonden" is a novel written by Dutch author Gerard Reve, first published in 1947. The story is set in post-World War II Amsterdam and follows the life of a young man named Frits van Egters over the course of ten evenings. The narrative explores themes of existentialism, loneliness, and the search for meaning in a changing world. The book is known for its unique style, combining stream-of-consciousness writing with detailed observations of everyday life. "De Avonden" is considered a classic of Dutch literature and has influenced many writers and artists in the Netherlands and beyond.