At her premature death in March 2023, Maria Rosa Antognazza was Professor of Philosophy at King's College London, member of the Academia Europaea, Trustee of The Royal Institute of Philosophy, Chair of the British Society for the History of Philosophy, and recently President of the British Society for the Philosophy of Religion. Educated at the Catholic University of Milan, she held fellowships and visiting professorships in Italy, Germany, Israel, Scotland, England, Switzerland, and the USA. Renowned for her prize-winning intellectual biography of Leibniz, she was also a prominent exponent of the value to philosophy of the study of its history.