Leivnits

Gottfried Wilhelm von Leibniz (also Leibnitz) (Leipzig July 1 (June 21 Old Style), 1646 – November 14, 1716 in Hannover) was a German philosopher, scientist, mathematician, diplomat, librarian, and lawyer of Sorbian origin considered a genius by his contemporaries. Leibniz is credited with coining the term "function" (1694), which he used to describe a quantity related to a curve, such as a curve's slope or a specific point on the curve. Leibniz is, jointly with Newton, generally credited for the development of modern calculus, particularly for his development of the integral and the product rule. He also initiated the development of the modern idea of conservation of energy through his concept of vis viva. He's considered to be the last true polyhistor as he mastered all knowledge of his time. http://en.wikipedia.org/wiki/Gottfried_Leibniz

Leave nits ("in his hair")... Nits: The eggs or young of a parasitic insect, such as a louse.