René Descartes (March 31, 1596 – February 11, 1650) was a French philosopher, mathematician, and scientist. Born in the Kingdom of France, he spent about 20 years of his life in the Dutch Republic. He was one of the most famous people of the Dutch Golden Age and is considered to be one of the founders of modern philosophy. In fact, the Cartesian coordinate system is named for him. He is the father of analytical geometry, the bridge between algebra and geometry. He is a key figure of the Scientific Revolution.