Emilie De Breteuil was born on December 17, 1706 in Paris, France and died on September 10, 1749 in Luneville, France. Emilie was taught at home. She mastered Latin, Italian, and English, but she loved mathematics. In 1725 when Emilie was 19 she married Marquise du Chatelet, Florent Claude, and Count of Lamont.. They lived the next five years in Semur-en-Auxios where Florent Claude was governor. Emilie had 3 children 2 boys Louis-Marie-Florent and Victor Esprit and she had a girl named Gabrielle-Pauline. It was after the birth of Victor that Emilie returned to her studies of mathematics. In 1773 Emilie began a friendship and an affair with Voltaire. In 1774 Voltaire and Emilie moved to a du Chatelet family home, near the Belgian border, where…show more content… Emilie enjoyed acting in theatrical scenes written by Voltaire, in the evening for entertainment. Voltaire and the Marquise had quests at Cirey, but even then they worked through the day. When they did not have quests, they worked almost without stopping.Voltaire did not know Emilie had entered an essay on the nature of fire in a contest sponsored by the French Academy of Science, a contest he was also entering. Neither of them won, but they were both recognized for their work. Emilie wrote a comprehensive textbook that she hoped her son would be able to use. Her book, Institution de Physique, was based on the theories of Leibniz, and was published in 1740 after her work with Koenig. Emilie began working on a translation of and analysis of Newton’s Principia. Emilie’s book included the idea that the force Kepler kept their planets in orbit. In 1748 Emilie began a relationship with Marquis de Saint-Lambert while visiting Luneville, but he did not share her passions. Voltaire learned about the affair, but he still supported Emilie. When she became pregnant by Saint-Lambert, Voltaire helped her making believe the Marquis du Chatelet that she was carrying the baby of her
