Gottfried Wilhelm Leibniz was an outstanding contributor to many fields of human knowledge. The historiography of philosophy has tagged him as a a oerationalista . But what does this exactly mean? Is he a a oerationalista in the same sense in Mathematics and Politics, in Physics and Jurisprudence, in Metaphysics and Theology, in Logic and Linguistics, in Technology and Medicine, in Epistemology and Ethics? What are the most significant features of his a oerationalisma, whatever it is? For the first time an outstanding group of Leibniz researchers, some acknowledged as leading scholars, others