Gottfried Wilhelm (von) Leibniz (1 July 1646 [O.S. 21 June] â 14 November 1716); German polymath, philosopher logician, mathematician. Developed differential and integral calculus at about the same time and independently of Isaac Newton. Leibniz earned his keep as a lawyer, diplomat, librarian, and genealogist for the House of Hanover, and contributed to diverse areas. His impact continues to reverberate, especially his original contributions in logic and binary representations.
Maria Rosa Antognazza's 2009 Leibniz biography is a major recent resource.