https://www.cnet.com/news/google-doodle-celebrates-mathematician-gottfried-wilhelm-leibniz/

Gottfried Wilhelm Leibniz was born in the middle of the 17th century but made substantial contributions to computer science still the underpinnings for modern computers.

Born on this day in 1646, the German mathematician completed his bachelor's degree in philosophy in one year at age of 15 and went on to become one of the most prominent figures in the history of philosophy. He was an early advocate of the theory of rationalism and anticipated modern logic and analytic philosophy.