"Confessions of an English Opium-Eater" is a memoir written by Thomas De Quincey, published in 1821. The work explores De Quincey's experiences with opium, detailing both the pleasures and the darker aspects of addiction. It provides insight into the effects of the drug on his mind and body, as well as its impact on his life and relationships. The memoir is notable for its vivid descriptions and philosophical reflections on the nature of pain, pleasure, and the human experience. De Quincey's writing style combines elements of autobiography and literary criticism, making it a significant contribution to the genre of Romantic literature.