"The Baroque Cycle" is a historical fiction trilogy written by Neal Stephenson. It consists of three novels: Quicksilver, The Confusion, and The System of the World. Set in the late 17th and early 18th centuries, the series explores the scientific, political, and economic changes of the Baroque period, intertwining real historical figures and events with fictional narratives. The story follows several characters, including Daniel Waterhouse and Eliza, Countess de la Zeur, as they navigate the complexities of the Age of Enlightenment. The trilogy delves into themes of science, philosophy, and the emergence of modern economics, providing a rich tapestry of interconnected stories and ideas.