Henri-Benjamin Constant de Rebecque (French: [kɔ̃stɑ̃]; 25 October 1767 – 8 December 1830), or simply Benjamin Constant, was a Swiss-French political thinker, activist and writer on political theory and religion. Besides his numerous essays on political and religious themes, Constant also wrote on romantic love. His autobiographical Le Cahier rouge (1807) gives an account of his love for Madame de Staël, whose protégé and collaborator he became, especially in the Coppet circle, and a successful novella, Adolphe (1816).