Before revision: Origins and organization of the text Origins of the book 1636 Elisabeth of Bohemia In 1643 Descartes began a prolific written correspondence with Princess Elisabeth of Bohemia, in which he answered her moral questions, especially the nature of happiness, passions, and ethics.
After revision: Origins and organization of the text Origins of the book (1636) Elisabeth of Bohemia In 1643 Descartes began a prolific written correspondence with Princess Elisabeth of Bohemia, in which he answered her moral questions, especially the nature of happiness, passions, and ethics.