Many-valued logic through its history

Our purpose is to contribute here to the searching for the origins of many-valued logics and, within them, as a special case that of “Fuzzy Logic”, also called by different manners, as Diffuse Logic, either Heuristic Logic, or ‘logique floue’ (in French), etc. It is also our goal to relate how was welcome to many-valued logics in our Iberian Peninsula, which is just another province of the world philosophical universe.