"Belle du Seigneur" is a novel written by the Swiss author Albert Cohen, published in 1968. The story is set in the early 20th century and revolves around the passionate love affair between Solal, a Jewish diplomat, and Ariane, a beautiful woman. The narrative explores themes of love, identity, and the complexities of human relationships against the backdrop of European society. The novel is known for its rich prose and deep psychological insights. It delves into the characters' inner lives, revealing their desires and struggles. "Belle du Seigneur" is often regarded as a significant work in modern literature, reflecting Cohen's unique perspective on love and society.